Sharp EL-5150
Brief History
After Sharp launched the EL-5100 scientific calculator in 1979, the used principle called AER (Algebraic Expression Reserve), which debuted in it, has only been seen in simplified models for years. In 1985, two new models filled the gap between easy-to-program calculators and BASIC-programmable pocket computers. EL-5150 has a landscape design similar to its predecessor, the EL-5050 was a wallet format machine. The AER system was further improved, so conditional branches, looping instructions and possibility of subroutine calling were added. The program storage capacity were even higher, and more memory registers can be used.
Sharp then re-simplified the AER model and developed the EL-5010 (EL-512S) programmable scientific calculator, and later, returning to the more complex programming model used here, launched the company’s first graphing calculator, the EL-9000 (EL-5200).
You can read more about AER versions, operating instructions and programming in a specific article here.
| Manufacturer: | Sharp Corporation (Japan) |
| Mfg. date: | 1985-90 |
| Size: | 17,1×7,2×1,1 cm |
| Weight (ready for operate): | n.a. |
| Type: | programmable scientific |
| Capacity: | 10/10+2 digits (input/display) 12+2 digits (internal precision) |
| Operating logic: | formula-interpreting |
| CPU: | Hitachi SC61720D13 |
| Registers: | 2 standard (with saving the pending operation) 16 bracket (with saving the pending operation) 26 memory (without arithmetic) |
| Features: | +/-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 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: | 24 digit dot-matrix LCD |
| Power: | 3×CR2032 button cell |
| Programming method: | merged keystroke-programmable |
| Program capacity: | 1454 steps |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 59.9999963259 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00688090276E-70 |
EL-5150
Inside of the EL-5150
Keyboard and display of the EL-5150
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