4 ms·
Some early computers even had a dual-mode (binary / BCD) ALU: https://en.wikipedia.org/wiki/Bull_Gamma_3 https://en.wikipedia.org/wiki/Bull_Gamma_3
by rahen 3y ago
Some early computers even had a dual-mode (binary / BCD) ALU:
https://en.wikipedia.org/wiki/Bull_Gamma_3 https://en.wikipedia.org/wiki/Bull_Gamma_3
- teo_zero 3y agoThe glorious 6502 had a flag to perform all arithmetic operations in BCD.
- Animats 3y agoIBM mainframes still do. It's used by COBOL.[1] [1] https://www.ibm.com/docs/en/cobol-zos/6.4?topic=arithmetic-sign-representation-zoned-packed-decimal-data https://www.ibm.com/docs/en/cobol-zos/6.4?topic=arithmetic-s...