TI-74
Encyclopedia
The Texas Instruments
TI-74 Basicalc is a type of programmable calculator
, which was released in 1985 to replace the Texas Instruments Compact Computer 40
. One variant, the TI-74S, has a blank faceplate instead of secondary functions to allow for customization (otherwise it is the same as the 74). Both models accepted customized ROM-modules. The TI-95
, released at the same time, was a keystroke programmable descendant of the TI-59
and TI-66, with the same general form factor, but a two-line display (the second line was for function key definitions).
Texas Instruments
Texas Instruments Inc. , widely known as TI, is an American company based in Dallas, Texas, United States, which develops and commercializes semiconductor and computer technology...
TI-74 Basicalc is a type of programmable calculator
Calculator
An electronic calculator is a small, portable, usually inexpensive electronic device used to perform the basic operations of arithmetic. Modern calculators are more portable than most computers, though most PDAs are comparable in size to handheld calculators.The first solid-state electronic...
, which was released in 1985 to replace the Texas Instruments Compact Computer 40
Texas Instruments Compact Computer 40
The Texas Instruments Compact Computer 40 or CC-40 is a battery-operated portable computer that was manufactured and released by Texas Instruments in March 1983. Priced at US$249, it weighs 600 grams and can be powered by four AA batteries or an AC adapter...
. One variant, the TI-74S, has a blank faceplate instead of secondary functions to allow for customization (otherwise it is the same as the 74). Both models accepted customized ROM-modules. The TI-95
TI-95
The TI-95, also called the TI-95 Procalc, is a keystroke programmable calculator and was introduced in 1987 by Texas Instruments. It was rather large, measuring 3.7" by 8" by 1" and had a dot-matrix display. It had 8kB of RAM and could be connected to PC-324 compatible printers...
, released at the same time, was a keystroke programmable descendant of the TI-59
TI-59
The TI-59 was an early programmable calculator, manufactured by Texas Instruments from 1977. It was the successor to the TI SR-52, quadrupling the number of "program steps" of storage, and adding "ROM Program Modules" and a magnetic card reader for external storage...
and TI-66, with the same general form factor, but a two-line display (the second line was for function key definitions).
Technical specifications
- 31 5x7 character LCD
- 32+4 KB ROM
- 8 KB RAM
- RAM/ROM memory expansion port
- hexbus port
- 24 characters per line
- port for power supply
- place for 4 micro batteries