Brother 812L
Brief History
In addition to wallet-form calculators equipped with liquid crystal displays, Brother Industries has redesigned the previous „handy”-sized E-series housing, and introduce the new 811L and 812L models. The on/off switch was modified, and always reset by a spring, the machines can be switched off with a button. New function was also the permanent memory, which retains its content after switching off.
| Manufacturer: | Brother Industries Ltd. (Japan) |
| Mfg. date: | 1980 |
| Size: | 7,6×14,3×2,1 cm |
| Weight (ready for operate): | n.a. |
| Type: | extended four-function |
| Capacity: | 8 digits (input/display) 8 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | NEC D1831G |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 1 bracket (with saving the pending operation) 1 memory (with aritmetic) |
| Features: | %calculation with percent +/-change sign (direct entry of negative numbers) RVexchange registers (X-Y) Ffloating-point notation Sqrsquare root x2square pivalue of pi (3.1415..) can be recalled 1/xreciprocal |
| Display: | 8+1 digit LCD (Epson) |
| Power: | 2×AA battery |
812L
Inside of the 812L
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