Sharp EL-556G
Brief History
In 1992, the first Sharp EL-506 model with formula-interpreting technique (DAL = Direct Algebraic Logic) was introduced. The new EL-506G (EL-556G) can acquire formulas in the same was as written on paper. The last pending operation was also shown on the left side of the display (called Function Display), and it was absolutely necessary, because unlike later types, we could not see and edit the entire operation sequence so far. Calculation of integrals was abandoned, but possibility of random number generation and fractional calculations appeared.
| Manufacturer: | Sharp Corporation (Japan/China) |
| Mfg. date: | 1992-95 |
| Size: | 7,6×14,2×1 cm |
| Weight (ready for operate): | 71 g |
| Type: | scientific |
| Capacity: | 10+2 digits (input/display) 12+2 digits (internal precision) |
| Operating logic: | formula-interpreting |
| CPU: | Sharp LI3308Z |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 16 bracket (with saving the pending operation) 7 memory (with aritmetic) |
| Features: | %calculation with percent +/-change sign (direct entry of negative numbers) Ffloating-point notation Fixfixed-point notation: the listed decimals can be chosen (0-9) Sciscientific (exponential) notation Engengineering notation a b/callows entry and display of fractions BSbackspace (right-shift) function Sqrsquare root x2square pivalue of pi (3.1415..) can be recalled 1/xreciprocal trigtrigonometrical functions (sin, cos, tan and inverses: arcsin, arccos, arctan) hyphyperbolic functions (sinh, cosh, tanh and inverses: ar sinh, ar cosh, ar tanh) DMS-DDconversion of decimal and sexagesimal numbers logexponential and logarithmical functions (10- and e-base) yxraising to power SDone variable statistics: calculating mean and standard deviation LRtwo-variable statistics: linear regression nCrprobability calculations P-Rconverting coordinates between rectangular and polar systems n!factorial |
| Display: | 10+2+2 digit LCD |
| Power: | 2×LR44 button cell |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.000000699 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00688090276E-70 |
EL-556G
Inside of the EL-556G
Display and keyboard of the EL-556G
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