National (Panasonic) Panac S-1 (JE-5001)
Brief History
In 1975 Matsushita corporation introduced a whole new series of pocket calculator, which contained Matsushita-made circuits for the first time. Earlier mostly US-made (Texas Instruments, MOSTEK etc.) chips were used in these machines. The Panac P-1 (JE-8801, Panasonic 8801) allowed percentage calculations, the Panac M-1 (JE-8501, Panasonic 8501) added memory, and the Panac S-1 (JE-5001, Panasonic 5001) was a scientific calculator. In the US, these machines were sold under the Panasonic brand, in Europe according to the contract between Matsushita and german Olympia International, they distributed these machines with the Olympia logo and model numbers.
The S-1's (Panasonic 5001, or Olympia CD 90) Matsushita MN5750 circuit in addition to standard scientific functions, allows calculation of hyperbolic functions, but its most extraordinary feature is the accumulation of squares. Efficiency of this machine was degraded due to lack of exponential entry and display, but compensated by its low price compared to US-made scientific calculators.
| Manufacturer: | Matsushita Communication Industrial Co., Ltd. (Japan) |
| Mfg. date: | 1975 |
| Size: | 8,5×14,4×2,9 cm |
| Weight (ready for operate): | 279 g |
| Type: | scientific |
| Capacity: | 8 digits (input/display) 8 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | Matsushita MN5750 |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 1 memory (with aritmetic) |
| Features: | +/-change sign (direct entry of negative numbers) RVexchange registers (X-Y) Ffloating-point notation Sqrsquare root 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 |
| Display: | 9 digit VFD (Itron DP95A) |
| Power: | 4×AA-type battery 6V adaptor |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 62.5781 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 - |
Panac S-1
Inside of the Panac S-1
Similar items
