Port - Most input/output devices are outside the computer case. These devices communicate with components inside the computer case through a wireless connection or through pcables attatched to the case at a connection called a port. (Chad G.
Sinclair MK 14 The was the first computer made by the Sinclair company (at the time called Science of Cambridge because the Sinclair name was used by another company). The was a training board sold in kit form for and featurin
IMSAI 8048 A soon as the Intel single chip microcomputer was available, IMSAI developped this single board computer. The 8048 processor offered integrated RAM, ROM, I/O, Timer/counter and interrupts. IMSAI added a 24 keys hexadecimal keyboard, a 9-digit LED hex display, 26 I/O lines connectors, 5 relays, Teletype and audio cassette interfaces. 2 Kb of ROM and 1 Kb. of RAM was intalled. Sockets was available for one additional Kb.
The RCA SuperElf single-board computer was made by Quest Electronics. It was an improvement of the Netronics Elf and Elf II training boards, also based on the RCA one of the first RISC microprocessors.
The NEC TK 80 is a Training Kit (hence the "TK") computer sold at the end of the It is considered the first japanese home-computer. It was firstly aimed at technicians, but it met a great success with first computer hobbyists.