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Olivetti P6040
	The Olivetti P6040 Portable Computer
Manufacturer	Olivetti
Type	Personal Computer
Release date	April 1975; 49 years ago
Operating system	Mini BASIC
CPU	Intel 8080
Input	Keyboard
Successor	Olivetti P6060

The Olivetti P6040 was a personal computer, described by its maker as a personal minicomputer. The P6040 was programmable in Mini BASIC and featured a floppy disk drive that used proprietary 2.5-inch sleeveless disks called "Minidisk". It was produced starting from 1977 and was the first microprocessor-based Olivetti computer, the Intel 8080, instead of on TTL logic CPU.^[1]

Designed by Pier Giorgio Perotto, it was presented at Hannover Messe in April 1975 together with the P6060, its hardware used TTL technology. Both had a brown-colored case.

The P6040 was little in dimensions and weight, thanks to the introduction of microprocessor (for the first time at Olivetti).^{[citation needed]}