Texas Instruments TI-30 LCD
Brief History
TI-30 introduced in 1976 became very popular because of its low price and functionality. The japanese competition flooded the market with extremely low priced scientific calculators with LCD displays which requires much less power than LED displays. Texas Instruments developed the successor of the TI-30 with liquid crystal display technology, and in 1980 the TI-30 LCD was introduced in Europe. In the United States, a thinner "Slimline" TI-30-II were in production from 1981. Its novelty was the conversion between angular units. The used keyboard assembly in a wide range of calculators seemed to be faulty due to low quality of materials, so in 1984 the TI-30 LCD was replaced by japanese-made TI-30-III.
| Manufacturer: | Texas Instruments (USA/Italy) |
| Mfg. date: | 1980-84 |
| Size: | 7,4×13,4×2,4 cm |
| Weight (ready for operate): | 142 g |
| Type: | scientific |
| Capacity: | 8/5+2 digits (input/display) 11+2 digits (internal precision) |
| Operating logic: | AOS |
| CPU: | Texas Instruments CD4565NL |
| Registers: | 3 standard (with saving the pending operation) 1 constant (with saving the pending operation) 15 bracket (with saving the pending operation) 1 memory (with aritmetic) |
| Features: | %calculation with percent +/-change sign (direct entry of negative numbers) Ffloating-point notation Sciscientific (exponential) notation Sqrsquare root x2square pivalue of pi (3.1415..) can be recalled 1/xreciprocal trigtrigonometrical functions (sin, cos, tan and inverses: arcsin, arccos, arctan) logexponential and logarithmical functions (10- and e-base) yxraising to power n!factorial |
| Display: | 9 digit LCD |
| Power: | 2×AA-type battery |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.019845215 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.0069206E-70 |
TI-30 LCD
Inside of the TI-30 LCD: the PCB, IC and LCD
TI-30 LCD with original packaging
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