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.
He and Steve Wozniak were trying to figure out a name for their new company, and they decided that if they couldn't think of one by the end of the day that was better than Apple, they would choose Apple. They couldn't think of anything better, so on April 1, 1976, Apple Computer, Inc. was born.