The Coleco Adam was a home computer introduced by Coleco in 1983. It was available as a standalone computer, or could be bought as an expansion pack for the ColecoVision game console.
Like other home computers of the time, the Coleco Adam used a tape drive as one means to store programs and data, but this was not a standard Compact Cassette drive. The dual ‘Adam High Speed Digital Data Pack’ tape drives used a slightly modified type of Compact Cassette that ran at much higher speed than usual, had a different configuration of holes in the shell, and used thicker tape. These could store 256 KB, and ran at 20 inches per second (ips) when reading/writing and and 80 ips when rewinding. Blank Digital Data Packs were supplied pre-formatted and could not be formatted by the user.
As well as the Digital Data Pack drives, the Adam had a ROM cartridge slot that accepted all ColecoVision cartridges as well as its own (it could play ColecoVision games even as a standalone computer). Later in production, a 5.25-inch disk drive was made available as an accessory.
The Coleco Adam had other unusual features such as a dedicated daisywheel printer (that also contained the power supply), built-in word-processing software, and the CP/M operating system as an option.
Unfortunately, delays in its introduction, and build quality issues led to it being discontinued in 1985. One particular problem was that tapes left in the drives or near the machine when it was turned on could suffer data loss.