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TI utilized the CC-40 Plus ROM to create the TI-74's BIOS; it removed the CC-40's internal debugger to gain enough space to add calculator mode to the TI-74. The CC-40 Plus' cassette routines were reused in the TI-74, and the CC-40's Hexbus port underwent a physical footprint change and was renamed to Dockbus.
height: 0.7–1.4 inches (18–36 mm) The HP-67 is a magnetic card-programmable handheld calculator , introduced by Hewlett-Packard in 1976 at an MSRP of $450. [ 1 ] A desktop version with built-in thermal printer was sold as the HP-97 at a price of $750. [ 2 ]
A graphing calculator is a class of hand-held calculator that is capable of plotting graphs and solving ... USB-rechargeable 3.7 V/2000 mAh/7.4 Wh Li-Ion, USB 2018 ...
The HP 48 is a series of graphing calculators designed and produced by Hewlett-Packard from 1990 until 2003. [1] The series includes the HP 48S, HP 48SX, HP 48G, HP 48GX, and HP 48G+, the G models being expanded and improved versions of the S models.
There are five calculators in the 49/50 series of HP graphing calculators. These calculators have both algebraic and RPN entry modes, and can perform numeric and symbolic calculations using the built-in Computer Algebra System (CAS) , which is an improved ALG48 and Erable combination from the HP 48 series .
The machine originally used Williams–Kilburn tubes for memory which stored 2,000 words electrostatically, with an access time of 8 microseconds. Each word consisted of 16 decimal digits, using four bits to represent each digit, plus two modulo-4 error-checking bits. A word could store a 13-digit number with sign and 2-digit index, or one ...
The calculator uses a tokenized programming language (similar to the earlier FX-602P) which is well suited to writing more complex programs, as memory efficiency is a priority. Tokenization is performed by using characters and symbols in place of long lines of code to minimize the amount of memory being used.
The HP Saturn processors, used in many Hewlett-Packard calculators between 1984 and 2003 (including the HP 48 series of scientific calculators) are "4-bit" (or hybrid 64-/4-bit) machines; as the Intel 4004 did, they string multiple 4-bit words together, e.g. to form a 20-bit memory address, and most of the registers are 64 bits wide, storing 16 ...