Sharp EL-556L
Brief History
The Sharp’s Advanced DAL Series which was introduced in 1996, has the EL-506L (EL-556L) member with two line display, which allow to correct or rewrite the entire entered formula at any time, even after performing a calculation (Playback function). Comparing to the previous EL-506G (EL-556G) model, there was no change in its functions, only the technology was replaced with cheaper alternatives: the chip was mounted on two-sided PCB, but the keyboard has a second, one-sided PCB connected with foil cables.
| Manufacturer: | Sharp Corporation (Japan/China) |
| Mfg. date: | 1996-98 |
| Size: | 8,3×14,4×1,4 cm |
| Weight (ready for operate): | 100 g |
| Type: | scientific |
| Capacity: | 10+2 digits (input/display) 12+2 digits (internal precision) |
| Operating logic: | formula-interpreting |
| CPU: | Sharp LI351501 |
| 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 dot-matrix LCD |
| Power: | 2×LR44 button cell |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.0000006699 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00688090276E-70 |
EL-556L
Inside of the EL-556L
Display and keyboard of the EL-556L
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