Commodore
The Commodore PET (Personal Electronic Transactor) was a computer introduced by Commodore International in 1977 that used the MOS 6502 CPU and initially had 4KB of memory.
The next generation of Commodore computers was the Commodore VIC-20, an 8-bit computer that used the MOS 6502 CPU and initially had 5KB of memory that was first introduced in 1980.
Sometimes abbreviated as C64, the Commodore 64 is one of the most well known and used Commodore computers and is a 8-bit computer introduced by in January 1982 that had 64 kilobytes of memory.
Also see: Amiga, CDTV, Computer history, SYS 64738