Texas Instruments Calculator Serial Number
Cecelia Seiner
The serial number and manufacturing (date) code is engraved in the back casing of the calculator. To find the serial number, look for a string of numbers such as 2056018567. This number is assigned to each individual calculator.
To find the manufacturing (date) code, look for a string of letters and numbers such as I-0498A. This number is not unique, meaning one or more calculators could have the same manufacturing (date) code.
Please Note: Texas Instruments does not register serial numbers or manufacturing (date) codes. It is up to the owner of the calculator to keep this information on record.
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The [+/-] key was used on the TI-30Xa calculator to change an answer from a positive number to a negative number. This key is not present on the TI-30X IIS or the TI-30X IIB units. So to perform this function on the TI-30X IIS or TI-30X IIB:
The TI-30Xa is a basic scientific calculator manufactured by the Dallas-based technology company Texas Instruments. Although it has been replaced by more advanced technology since its introduction in the late 1990s, it's great for children to use in school or for math homework. It can be useful for getting to grips with the fundamentals of algebra and trigonometry, and the basics of using the calculator are easy to learn.
Use the "+", "-", "X" and the division symbols to perform basic arithmetic. Type in "2 X 2" and then hit the "=" key to display the answer of "4" for example. You can also use the "()" keys to enter parenthetical expressions to basic sums.
Enter a figure and then hit the "X" key followed by another figure and then the "2nd" key to work out a percentage. This sum will multiply the first figure by the second to two decimal points. Entering "200 X 5 "2nd" and then "=" would give you 5 percent of 200, or 10, for example.
Press "STO" followed by the "n" key to to store a value to the calculator's memory. To recall the value later, press "RCL" followed by "n." The calculator has three memory settings, and can store a number in each. To clear the memory, press "0" then "STO" followed by "1," "2," or "3" depending on which memory you wish to clear.
Michael Roennevig has been a journalist since 2003. He has written on politics, the arts, travel and society for publications such as "The Big Issue" and "Which?" Roennevig holds a Bachelor of Arts in journalism from the Surrey Institute and a postgraduate diploma from the National Council for the Training of Journalists at City College, Brighton.
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For each session, you are given 180 minutes to answer 120 questions. That is an average of one and a half minutes for each question. The calculator is the only productivity tool that you have for the exam, so it pays to set it up for maximum efficiency.
Under the default chain operation mode, you need to compute the denominator first, because you do not know the value of it. There are a few ways you can do this. The shortest way is to key in [1.07] [xy] [4], which gives you a denominator of 1.3107. Press the [1/x] key to get the reciprocal, [x] by [1000], press [=], and we get the correct answer.
Now, there is an alternative mode that is more intuitive and will save you some keystrokes. This is known as the AOS mode. AOS stands for Algebraic Operating System, and what it does is, it intelligently prioritises the operations based on mathematical rules. So if you key in [1000] [/] [1.07] [xy] [4], the calculator automatically knows that the power operation has to take precedence over the divide operation. This mode not only reduces the number of keystrokes, it is also more straightforward to use.
In summary, the 2 simple settings to help shave precious seconds off your calculations. Set the number of decimal places to 9, and the order of operations to AOS mode.
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Newprog 1.0 by is a very powerful programming language released in 2010 for the TI-68k series. Its syntax is close to TI-68k Basic, but its functionality is closer to C and ASM: access to memory, sprites, timers, OS variables, etc. In addition, executing TI-Basic instructions directly is possible. Newprog programs can be edited and compiled directly on the calculator. Basically, it is similar feature-wise to Axe Parser for the monochrome TI-Z80 series, released in the same time frame; sadly, unlike Axe Parser, it seems to have come too late to trigger a significant revival of the corresponding community.
Recently, Newprog 2.0 was released on ticalc.org. It represents an evolution of version 1.0, with generally good backwards compatibility, and significant new functionality. The main upside of Newprog 2.0 is that it can be used in conjunction with NPPTOC, a new calculator-side program performing source-to-source translation between Newprog and C under some conditions, e.g. that all variables have a single type throughout their lifetime. Once translated, the programs can be compiled to assembly using GTC (calculator-side and computer-side) or GCC4TI (computer-side), creating faster, standalone native code binaries.
However, there's more! Thanks to NPPTOC, Newprog 2.0 adds support for libraries, which can be programmed either in Newprog or C(+ASM), then compiled into native code, and called from Newprog programs. This unleashes the full power of native code. Other improvements in Newprog 2.0 include a rewrite of the documentation, to fix errors and improve clarity, as well as new functions.
All in all, this looks to be a very solid new release... existing and new users of Newprog alike should love it!
Let's start with another couple of "text adventures" - text output and formatted text commands input - uploaded in 2019. The popularity of the genre has faded, but well-designed adventures are usually hours of fun, sometimes temporarily frustrating when there's a roadblock, for those who attempt to discover the adventures entirely by themselves, without using walkthroughs. Taking external notes and map drawings is advised in some games, especially to help re-playing them.
Open Adventure CE is a port Colossal Cave Adventure 2.5 by "DrDnar". The programming of the original Colossal Cave Adventure game started in 1975 (!); since then, a significant number of persons have contributed to various versions of it. As in many adventure games, the player is navigating a complex maze containing treasures and monsters, solving puzzles, while of course trying to avoid dying prematurely.
A first upload in our archives for its author, ZEMU by Nicholas Mosier brings Z-Machine emulation to the TI-eZ80 series. The Z-Machine is a lightweight 16-bit virtual machine running Z-Code, created in the late 1970s for executing text adventures on a huge variety of platforms, originally used by Infocom; over time, successive versions of the spec and machine have gained capabilities, and spawned several improved derivatives allowing e.g. native support for 32-bit integers, the making of larger files, or the addition of images and sound data, for more complex and realistic games. The availability of a Z-Machine means that among other games, you can play Zork on your TI-eZ80 calculator, and therefore be eaten by a grue plenty of times before you beat the game... don't worry, that's natural, that's the hallmark of Zork ;)
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