Osborne 1A beige/black case portable microcomputer, 1981 – Osborne Computer Corp., Hayward, Calif. ..

February 2, 2025

*Zilog Inc. Z80 8-bit microprocessor (MPU) at 4.0 MHz *64-kB DRAM main memory *Twin single-density drives, handling 90kB-capacity 5-1/4-inch floppy disks *Digital Research CP/M 2.2 disk operating system (DOS) *Operational – CP/M and applications were loading as the photo was taken —- history-computer.com/Library/Osborne1TechnicalManual.pdf —- Weight = 25 lb = 11 kg (using ‘calibrated’ IKEA bathroom scale) DSC_4934 Anx2 Q90 Ap Q11 1200h final 0.5k-3k

Source by jumpg8