Brother 408AD
Brief History
Brother Industries has been manufacturing calculators since 1966, the first portable version appeared in 1972, and their first pocket-sized model appeared one year later. In addition to self-made models, many calculators made in Korea or Hong Kong were marketed under the Brother brand in the early 1970s. In the line of self-made models, the D series following the Z series was striking with its smaller dimensions, weight, more curved shapes, and the dominance of the aluminum front of the keyboard.
| Manufacturer: | Brother Industries Ltd. (Japan) |
| Mfg. date: | 1975-76 |
| Size: | 7,7×14×2,2 cm |
| Weight (ready for operate): | n.a. |
| Type: | four-function |
| Capacity: | 8 digits (input/display) 8 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | NEC uPD940C |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 1 memory (with aritmetic) |
| Features: | %calculation with percent +/-change sign (direct entry of negative numbers) Ffloating-point notation Sqrsquare root pivalue of pi (3.1415..) can be recalled |
| Display: | 9 digit VFD (Itron FG95A) |
| Power: | 2×AA battery or adaptor |
Brother 408AD
Inside of the 408AD
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