Comparison
 Sharp EL-5809 |  Texas Instruments TI Programmer | |
| Manufacturer: | Sharp Corporation (Japan) | Texas Instruments (USA/Italy) |
| Mfg. date: | 1977 | 1977-82 |
| Size: | 17,8×4,6×0,8 cm | 8×14,7×3,4 cm |
| Weight (ready for operate): | 63 g | 147 g |
| Type: | scientific | |
| Capacity: | 8/5+2 digits (input/display) 9/9+2 digits (internal precision) | 8 digits (input/display) 8 digits (internal precision) |
| Operating logic: | algebraic | algebraic |
| CPU: | SC43300 | Texas Instruments ZA0675 |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 1 memory (with aritmetic) | 2 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: | +/-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) DMS-DDconversion of decimal and sexagesimal numbers logexponential and logarithmical functions (10- and e-base) yxraising to power n!factorial | +/-change sign (direct entry of negative numbers) Ffloating-point notation |
| Display: | 8+1 digit LCD | 9 digit LED |
| Power: | 2×LR41 button cells | BP-8 rechargeable battery pack with AC-9900/R charger |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.00024571 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00688102E-70 |