Olivetti M54

Multi-user computer, 1985, Olivetti. The M54 is a small business system of Olivetti's "Linea 1" family, built around the 16-bit Zilog Z8001 processor, the same used in the M20, running at 10 MHz. Unlike the M20 it is a multi-user machine: several terminals can be connected to it and it runs Olivetti's L1 MOS operating system with a 5.25" floppy drive and a 20 MB hard disk. It was sold to small companies for accounting and office work before Olivetti moved this market to Unix and PC networks.