Early Electronic Calculator Pocket Calculator Photo Gallery

Texas Instruments TI Programmer 1978 Logic Technology: LSI Display: LED With the advent of microcomputers in the mid-1970s a few calculator models were produced which supported operations in hex and octal as well as decimal. The TI Programmer was an early entrant in this niche market. In addition to the 4 basic arithmetic operations, bit-wise logical operations (AND, OR, XOR, 1s-complement, shift) are provided, as well as conversion between bases.

Casio HL-806 1979 Logic Technology: LSI Display: LCD

Texas Instruments TI-1025 1979 Logic Technology: LSI Display: VFM A bit of a diversion for Texas Instruments into vacuum-flourescent displays, in contrast to the LED displays they used in most of their pocket calculators of the period.

Hewlett-Packard 34C 1980 Logic Technology: LSI Display: LED

Hewlett-Packard 38C 1981 Logic Technology: LSI Display: LED

Texas Instruments TI-30 1981 Logic Technology: LSI Display: LED

Texas Instruments TI-55 1981 Logic Technology: LSI Display: LED

Casio TH-10 "Crystal Cal" 1985 Logic Technology: LSI Display: LCD Unique construction with transparent body.