HP HP48GX RPN Expandable Graphic Calculator

HP HP48GX RPN Expandable Graphic Calculator
Label: Hewlett Packard
Category: CE


Average customer rating: 4.5 out of 5 stars
Media: Electronics


UPC: 088698004258
EAN: 0088698004258
ASIN: B00004TFKZ

HP HP48GX RPN Expandable Graphic Calculator


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  1. HP 50G Graphing Calculator

Amazon.com Review

Hewlett-Packard's HP 48GX is the most powerful calculator in the 48 series, offering the same advanced calculation and programmability features as its siblings, along with expansion options that should appeal to power users and programmers. All this is made possible by the expansion card slot, which lets users expand the built-in memory from 128 KB to a maximum of 1.256 MB or install application software that adds more advanced features to the calculator.

The 48GX is no slouch. Its colorful array of buttons lets users tap into 2,300 built-in functions, 300 of which are built-in formulas and scientific constants that encompass the spectrum of the mathematical and scientific fields. It handles everything from basic algebra equations to advanced trigonometric and statistical calculations. Best of all, if the 48GX doesn't have a feature you desperately need, you can use the built-in object-oriented programming language to create functions from scratch. You can then label your creations and access them as you would any other feature that is integrated with the calculator.

The 48GX uses reverse polish notation (RPN, also called postfix notation), which can be difficult for beginners to grasp, but advanced students and professionals will appreciate RPN's elegance and relative simplicity. An optional connectivity kit lets users connect the device to a PC to download new equations and software, and the integrated infrared port lets you share data with other calculators or output your graphs, plots, or other results to a separately available infrared printer. Typical students may want to opt for a less expensive (and less expandable) calculator in the 48 series, like the 48G+, but for those who demand the best and may need more than 128 KB of memory, the 48GX is the clear choice. --T. Byrl Baker

Pros:

Cons:

Amazon.com Product Description

Hewlett-Packard's 48GX graphing calculator is designed for the toughest equations from the classroom or lab. Its memory and functions are fully expandable and customizable with plug-in cards and the calculator has a built-in library of over 300 scientific and engineering equations. With object-oriented programming, you can create applications quickly and easily. This model allows you to view, enter, and manipulate arrays, view equations and formulas, and solve for any variable without rewriting your equation. You can even send files between HP 48G/GX calculators. With an optional connectivity kit, you can connect to your Mac or PC.

Customer Reviews:

5 out of 5 stars Stack is different. This required learning.......2004-04-26

To store '5' on the HP48 line of calculators, hit 5 [enter]. It's stored. You can even see where it's stored right away because you're always looking at the bottom four stack entries. It seems the previous reviewer believes that the way TI does calculators is the way calculators should be done. If that's you, buy a TI. Storing a value in a named variable is a fundamentally different way of thinking about calculation from the way HP decided to do it.

With RPN, there is very rarely any need for a named variable and it only took me about an hour to start using this calculator for fairly complex EE homework. One of the things I noticed about RPN fairly quickly is that if you're doing complex calculations, you'll often build up intermediate values and then bring the intermediate values together at the end. My study-buddies were always writing down their intermediate values, I just left them on the stack while I did the other calculations. More often than not, those previously calculated values were exactly where I needed them when I needed them later. Everyone else was punching back in the values that they had previously written down (with the possibility of error on each transcription) or trying to remember which variable they had stored them in.

I don't mean to ding the TI approach, I used to work at TI and I think they make a great product. I simply think that the HP has a subtly better philosophy of calculation and a massively better keyboard in the 48s/sx/g/sx line of calculators.

5 out of 5 stars The Mercedes Benz of Calculators.......2004-01-12

Being a college professor of Electrical Engineering for over 30 years, and having used numerous brands and models of calculators and having written reviews of some of them for various publications, there is no doubt in my mind that the HP48GX is indeed head and shoulders above all the other calculators (even the HP49). The RPL entry system is a natural and easy to learn process that mimics the pencil and paper approach that we've all learned in Grammar school arithmetic. The efficiency of input and the ease with which it handles comlex-number calculations is second to none. Formulae can be entered with mixed units and the calculator automatically performs internal conversions to present the answer in whatever valid units you desire. It handles 2-D and 3-D vectors with all the corresponding mathematical operations seemlessly. The infrared connectivity (wireless) and RS232 port (wire) both allow communication between another HP calculator and your computer. This calculator has the right mix of 'function per key' versus 'menu per key' that makes it very easy to negotiate.
One can enter a formula in algebraic notation and the calculator can solve for one of the variables in symbolic and/or numeric form (if all the other vales are specified). The keystroke error recovery facility is superb. A couple of days with this calculator and most people cannot go back to their old 'Algebraic Operating System' calculators, with its cumbersome parenthesis, without making a mistake.
There is not enough space here to praise this calculator to the extent that it deserves. Over the years with all the students and professionals I've had contact with, I know of no one who has ever regretted purchasing this calculator except for the fact that they realized that they waisted money on purchasing their AOS calculators.

5 out of 5 stars HP and RPN Entry.......2003-10-09

Sorry if this is a little off the topic, but I guess you could say HP sent me here.....
I own a somewhaz tired HP32SII...ands wanting to replace it, naturally, I looked at HP first as I did not want, nor have I ever needed an "Equals" key :-)

What i found amazed me...not only is my 32SII worth about 400.00 dollars now, there are no more to be had...suddenly it doesn't look too tired! I continued to look for HP's RPN offerings, and found, other than the 48, they don't have any RPN Calculators anymore. I was told that they have something under development,due out in late Fall or early Winter. They did not say it was RPN, nor did they quote a "Ball Park" price, so I can't wait!

Has HP lost its collective mind? Is anyone in HP product development or Sales following this discussion? I hope so.

By the way, I paid around 45.00 dollars for my 32SII...it came with a great soft cover manual, about 160 pages, and is the best calculator I ever owned. It replaced my 70's era HP33E, which I still have.....Wonder what that is worth?

Thanks for allowing me to vent!

5 out of 5 stars PE = Paranoid Extremist.......2003-09-27

This is without a doubt, the best calculator ever made for engineering calculations and tasks. Unlike a laptop, it never runs out of battery power in the middle of a design, can be used easily on a plane, can even be used in techincal customer meetings or on the shop floor to check things out that need checking. In an age of spreadsheets and complex analyis programs, it is often forgotten how useful a competent engineering calculator can be to a practicing engineer. It is also invaluable to students of engineering for assignments and exams. Speaking of which, the MN (and soon NCEES) policy has changed so that this calculator is no longer eligible for use on the PE or FE exams. This is due to its ability to transfer data to others, and that one can type text into it. Using the time functions of the calculator, and some personal time trials on the practice exams, I estimated that it would take the average test taker around 1 week to type in even a portion of the test with the limited alpha numeric capabilities of the keyboard, and then transmit it through infa-red to a waiting accomplice 3-4 ft away (given best transmition speed). You would almost certainly be spotted during this activity, and forced into some form of slave labor camp or fast food restaurant. As I am sure most of you considering purchasing this calculator are indeed planning this type of criminal intent, I must warn you that you better think twice because they are on to you. However, those rare, honest engineering and technical types with a minor amount of integrity that somehow leaked into their character could reward themselves (after passing the test using a slide rule, an abacus and some rocks) with a fine tool such as this calculator. They are getting harder and harder to find, so I would buy one while it is available. (The alternatives I have found so far for my upcoming test are kind of like trading a Land Rover for a skateboard). The add-on cartridge with the additional 670 equations, constants and tables needed for the PE exam is pretty good too but may soon require a special permit to own.

2 out of 5 stars User unfriendly, slow, too many typing for simple things.......2003-08-24

I bought this one when I was in engineering school. I also worked for the company who made this calc (the companies culture is totally different now from the past unfortunately!). Ok, this calc is very powerful (more powerful than TI flagship 92+ or Voyage 200. I have both HP 48GX and Voyage 200) This calc has also (used to) have a lot of very telent people/programmers to support them (You can find a lot of programs on the web). But you have to deal with the unfriendly user and unaccept slow (for me) interface,

If I don't use it for a while, I cannot even recall how to use this calc except basic functions. The calc is slow, even you type 1+1 (ok it should be 1 1 +), it needs to think for milliseconds. Sometimes, my typing is much faster than this calc can handle (I feel).

This calc also takes many keys typing for some simple calculations Some calculation will need you to go through menu after menus (if you don't bother to custom the user interface!). OK, if you have time, that is not a problem. If you use for EXAM or Under Time Pressure, this will kill you. It takes much more keys typing (assuming you know where to find all the menus). It will take more time for the same calculation for other calc (remember this calc is slow too).

This calc targets to their friends who loves RPN/RPL or very technical people who likes complicated things rather than simple and user friendly interface for the same problem to solve. It is powerful. Even 12 yo calc, it is more powerful than any TI or Casio.

Unless you are very technical person, this calc is overkill. Even you are technical person, you may not need this calc. You are better to get a laptop, running Matlab and Maple etc, they are much more useful, user friendly, much faster and much more powerful than this calc! You can program C instead of RPL or assembly language. Almost nobody will program assembly these days! You can get a very small Laptop e.g Toshiba lifebook intead of this product unless you are still in school, this is for the exam. If you are still a student, you may think about TI 89, it is more user friendly, much faster (most operations), you don't need this calc. (I have many math courses and engineering courses, I can use either HP or TI calc fine even in my graduate courses)

I never believe a calc should be replace for the brain to do algebra, symbolic manipulation in high/college school. One will learn nothing that way. Don't buy it for that reason.

In short, the calc is very powerful, RPN may be more good for the machine (less stacks), but you have to think how to do you algabra. Why no testbooks write equations in RPN ways if it is easy to read? Anyway, I don't like RPN too much but I can deal with it. The unfriendly, very SLOW interface makes this calc unusable for me. I will avoid this one unless absolute necessary to deal with those problems. Otherwise, put the equations to Matlab or Maple, you get much better, faster, nicer results and graphs.
HP HP48GX RPN Expandable Graphic Calculator
Average customer rating: 4.5 out of 5 stars
  • Stack is different. This required learning
  • The Mercedes Benz of Calculators
  • HP and RPN Entry
  • PE = Paranoid Extremist
  • User unfriendly, slow, too many typing for simple things
 HP HP48GX RPN Expandable Graphic Calculator

Manufacturer: Hewlett Packard
ProductGroup: CE
Binding: Electronics

GraphingGraphing | Calculators | Office Electronics | Categories | Electronics
ScientificScientific | Calculators | Office Electronics | Categories | Electronics
All Hewlett-PackardAll Hewlett-Packard | Hewlett-Packard | Computers Brands | Computers Features | Electronics
CalculatorsCalculators | Other HP Products | Hewlett-Packard | Computers Brands | Computers Features | Electronics
Hewlett-PackardHewlett-Packard | by Brand | Gifts | Specialty Stores | Computers Features | Electronics
Office ElectronicsOffice Electronics | Refurbished & Used | Special Features | Electronics Features | Electronics
CalculatorsCalculators | Classroom Math Supplies | Classroom Supplies | Educational Supplies | Categories | Office Products
Similar Items:
  1. HP 33S Scientific Calculator (F2216A)
  2. HP 50G Graphing Calculator

Accessories:
  1. Energizer E91BP-4 AA Batteries (4-Pack)
  2. HP 82240B Enhanced Infrared Printer for HP Calculators
  3. HP Connectivity Kit for HP Calculators 48G, 48G+, 48GX, and 49G

Product Features:
  • Over 2,300 functions including over 300 for scientific and engineering applications
  • Built-in equation library with over 300 formulas and constants
  • 2-way infrared communication, RS-232C serial port; supports optional printer
  • 128 KB memory; 2 card ports for expandable RAM and ROM
  • 2-D and 3-D graphing capabilities

ASIN: B00004TFKZ

Amazon.com Review

Hewlett-Packard's HP 48GX is the most powerful calculator in the 48 series, offering the same advanced calculation and programmability features as its siblings, along with expansion options that should appeal to power users and programmers. All this is made possible by the expansion card slot, which lets users expand the built-in memory from 128 KB to a maximum of 1.256 MB or install application software that adds more advanced features to the calculator.

The 48GX is no slouch. Its colorful array of buttons lets users tap into 2,300 built-in functions, 300 of which are built-in formulas and scientific constants that encompass the spectrum of the mathematical and scientific fields. It handles everything from basic algebra equations to advanced trigonometric and statistical calculations. Best of all, if the 48GX doesn't have a feature you desperately need, you can use the built-in object-oriented programming language to create functions from scratch. You can then label your creations and access them as you would any other feature that is integrated with the calculator.

The 48GX uses reverse polish notation (RPN, also called postfix notation), which can be difficult for beginners to grasp, but advanced students and professionals will appreciate RPN's elegance and relative simplicity. An optional connectivity kit lets users connect the device to a PC to download new equations and software, and the integrated infrared port lets you share data with other calculators or output your graphs, plots, or other results to a separately available infrared printer. Typical students may want to opt for a less expensive (and less expandable) calculator in the 48 series, like the 48G+, but for those who demand the best and may need more than 128 KB of memory, the 48GX is the clear choice. --T. Byrl Baker

Pros:

Cons:

Amazon.com Product Description

Hewlett-Packard's 48GX graphing calculator is designed for the toughest equations from the classroom or lab. Its memory and functions are fully expandable and customizable with plug-in cards and the calculator has a built-in library of over 300 scientific and engineering equations. With object-oriented programming, you can create applications quickly and easily. This model allows you to view, enter, and manipulate arrays, view equations and formulas, and solve for any variable without rewriting your equation. You can even send files between HP 48G/GX calculators. With an optional connectivity kit, you can connect to your Mac or PC.

Customer Reviews:

5 out of 5 stars Stack is different. This required learning.......2004-04-26

To store '5' on the HP48 line of calculators, hit 5 [enter]. It's stored. You can even see where it's stored right away because you're always looking at the bottom four stack entries. It seems the previous reviewer believes that the way TI does calculators is the way calculators should be done. If that's you, buy a TI. Storing a value in a named variable is a fundamentally different way of thinking about calculation from the way HP decided to do it.

With RPN, there is very rarely any need for a named variable and it only took me about an hour to start using this calculator for fairly complex EE homework. One of the things I noticed about RPN fairly quickly is that if you're doing complex calculations, you'll often build up intermediate values and then bring the intermediate values together at the end. My study-buddies were always writing down their intermediate values, I just left them on the stack while I did the other calculations. More often than not, those previously calculated values were exactly where I needed them when I needed them later. Everyone else was punching back in the values that they had previously written down (with the possibility of error on each transcription) or trying to remember which variable they had stored them in.

I don't mean to ding the TI approach, I used to work at TI and I think they make a great product. I simply think that the HP has a subtly better philosophy of calculation and a massively better keyboard in the 48s/sx/g/sx line of calculators.

5 out of 5 stars The Mercedes Benz of Calculators.......2004-01-12

Being a college professor of Electrical Engineering for over 30 years, and having used numerous brands and models of calculators and having written reviews of some of them for various publications, there is no doubt in my mind that the HP48GX is indeed head and shoulders above all the other calculators (even the HP49). The RPL entry system is a natural and easy to learn process that mimics the pencil and paper approach that we've all learned in Grammar school arithmetic. The efficiency of input and the ease with which it handles comlex-number calculations is second to none. Formulae can be entered with mixed units and the calculator automatically performs internal conversions to present the answer in whatever valid units you desire. It handles 2-D and 3-D vectors with all the corresponding mathematical operations seemlessly. The infrared connectivity (wireless) and RS232 port (wire) both allow communication between another HP calculator and your computer. This calculator has the right mix of 'function per key' versus 'menu per key' that makes it very easy to negotiate.
One can enter a formula in algebraic notation and the calculator can solve for one of the variables in symbolic and/or numeric form (if all the other vales are specified). The keystroke error recovery facility is superb. A couple of days with this calculator and most people cannot go back to their old 'Algebraic Operating System' calculators, with its cumbersome parenthesis, without making a mistake.
There is not enough space here to praise this calculator to the extent that it deserves. Over the years with all the students and professionals I've had contact with, I know of no one who has ever regretted purchasing this calculator except for the fact that they realized that they waisted money on purchasing their AOS calculators.

5 out of 5 stars HP and RPN Entry.......2003-10-09

Sorry if this is a little off the topic, but I guess you could say HP sent me here.....
I own a somewhaz tired HP32SII...ands wanting to replace it, naturally, I looked at HP first as I did not want, nor have I ever needed an "Equals" key :-)

What i found amazed me...not only is my 32SII worth about 400.00 dollars now, there are no more to be had...suddenly it doesn't look too tired! I continued to look for HP's RPN offerings, and found, other than the 48, they don't have any RPN Calculators anymore. I was told that they have something under development,due out in late Fall or early Winter. They did not say it was RPN, nor did they quote a "Ball Park" price, so I can't wait!

Has HP lost its collective mind? Is anyone in HP product development or Sales following this discussion? I hope so.

By the way, I paid around 45.00 dollars for my 32SII...it came with a great soft cover manual, about 160 pages, and is the best calculator I ever owned. It replaced my 70's era HP33E, which I still have.....Wonder what that is worth?

Thanks for allowing me to vent!

5 out of 5 stars PE = Paranoid Extremist.......2003-09-27

This is without a doubt, the best calculator ever made for engineering calculations and tasks. Unlike a laptop, it never runs out of battery power in the middle of a design, can be used easily on a plane, can even be used in techincal customer meetings or on the shop floor to check things out that need checking. In an age of spreadsheets and complex analyis programs, it is often forgotten how useful a competent engineering calculator can be to a practicing engineer. It is also invaluable to students of engineering for assignments and exams. Speaking of which, the MN (and soon NCEES) policy has changed so that this calculator is no longer eligible for use on the PE or FE exams. This is due to its ability to transfer data to others, and that one can type text into it. Using the time functions of the calculator, and some personal time trials on the practice exams, I estimated that it would take the average test taker around 1 week to type in even a portion of the test with the limited alpha numeric capabilities of the keyboard, and then transmit it through infa-red to a waiting accomplice 3-4 ft away (given best transmition speed). You would almost certainly be spotted during this activity, and forced into some form of slave labor camp or fast food restaurant. As I am sure most of you considering purchasing this calculator are indeed planning this type of criminal intent, I must warn you that you better think twice because they are on to you. However, those rare, honest engineering and technical types with a minor amount of integrity that somehow leaked into their character could reward themselves (after passing the test using a slide rule, an abacus and some rocks) with a fine tool such as this calculator. They are getting harder and harder to find, so I would buy one while it is available. (The alternatives I have found so far for my upcoming test are kind of like trading a Land Rover for a skateboard). The add-on cartridge with the additional 670 equations, constants and tables needed for the PE exam is pretty good too but may soon require a special permit to own.

2 out of 5 stars User unfriendly, slow, too many typing for simple things.......2003-08-24

I bought this one when I was in engineering school. I also worked for the company who made this calc (the companies culture is totally different now from the past unfortunately!). Ok, this calc is very powerful (more powerful than TI flagship 92+ or Voyage 200. I have both HP 48GX and Voyage 200) This calc has also (used to) have a lot of very telent people/programmers to support them (You can find a lot of programs on the web). But you have to deal with the unfriendly user and unaccept slow (for me) interface,

If I don't use it for a while, I cannot even recall how to use this calc except basic functions. The calc is slow, even you type 1+1 (ok it should be 1 1 +), it needs to think for milliseconds. Sometimes, my typing is much faster than this calc can handle (I feel).

This calc also takes many keys typing for some simple calculations Some calculation will need you to go through menu after menus (if you don't bother to custom the user interface!). OK, if you have time, that is not a problem. If you use for EXAM or Under Time Pressure, this will kill you. It takes much more keys typing (assuming you know where to find all the menus). It will take more time for the same calculation for other calc (remember this calc is slow too).

This calc targets to their friends who loves RPN/RPL or very technical people who likes complicated things rather than simple and user friendly interface for the same problem to solve. It is powerful. Even 12 yo calc, it is more powerful than any TI or Casio.

Unless you are very technical person, this calc is overkill. Even you are technical person, you may not need this calc. You are better to get a laptop, running Matlab and Maple etc, they are much more useful, user friendly, much faster and much more powerful than this calc! You can program C instead of RPL or assembly language. Almost nobody will program assembly these days! You can get a very small Laptop e.g Toshiba lifebook intead of this product unless you are still in school, this is for the exam. If you are still a student, you may think about TI 89, it is more user friendly, much faster (most operations), you don't need this calc. (I have many math courses and engineering courses, I can use either HP or TI calc fine even in my graduate courses)

I never believe a calc should be replace for the brain to do algebra, symbolic manipulation in high/college school. One will learn nothing that way. Don't buy it for that reason.

In short, the calc is very powerful, RPN may be more good for the machine (less stacks), but you have to think how to do you algabra. Why no testbooks write equations in RPN ways if it is easy to read? Anyway, I don't like RPN too much but I can deal with it. The unfriendly, very SLOW interface makes this calc unusable for me. I will avoid this one unless absolute necessary to deal with those problems. Otherwise, put the equations to Matlab or Maple, you get much better, faster, nicer results and graphs.

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