The General Computer Corporation (GCC) is a printer company formed in 1981 by Doug Macrae, John Tylko, and Kevin Curran. The company began as a video game company. They later changed to make computer peripherals.
They started out making mod-kits for existing arcade games - for example Super Missile Attack, which was sold as an enhancement board to Atari's Missile Command. At first Atari sued, but ultimately dropped the suit and hired GCC to develop games for Atari (and stop making enhancement boards for Atari's games without permission). They also created an enhancement kit for Pac-Man called Crazy Otto which they sold to Midway, who in turn sold it as the sequel Ms. Pac-Man; they also developed Jr. Pac-Man, that game's successor.
Under Atari, GCC made original games such as Food Fight, Quantum, and the unreleased Nightmare; produced many of the Atari 2600 cartridges, including the 2600 versions of Ms. Pac-Man and Centipede; produced over half of the Atari 5200 cartridges; and developed the chip design for the Atari 7800, plus producing the first round of cartridges for that base unit.
In 1984, the company changed direction to make peripherals for Macintosh computers: the HyperDrive (the Mac's first internal hard drive), the WideWriter 360 large format inkjet printer, and the Personal Laser Printer (the first QuickDraw laser printer). Presently the company focuses exclusively on laser printers.
HyperDrive was unusual because the original Macintosh did not have any internal interface for hard disks. It was attached directly to the CPU, and ran about seven times faster than Apple's "Hard Disk 20", an external hard disk that attached to the floppy disk port.