A promise that an unaccepted offer will be renewed in the future. This term comes from baseball, where in the 1880s it became the practice to offer paying spectators a rain check entitling them to future admission for a game that was postponed or ended early owing to bad weather.
Apple was established on April 1, 1976, by Steve Jobs, Steve Wozniak and Ronald Wayne to sell the Apple I personal computer kit. The Apple I kits were computers single handedly designed and hand-built by Wozniak and first shown to the public at the Homebrew Computer Club.
The Apple II series (trademarked with square brackets as Apple ][ and rendered on later models as Apple //) is a family of home computers, one of the first highly successful mass-produced text command microcomputer products, designed primarily by Steve Wozniak, manufactured by Apple Computer (now Apple Inc.) and introduced in 1977 with the original Apple II.