Apple and IBM signed a pact to form a jointly owned software company that would create a new operating system designed for the RISC (Reduced Instruction Set Computer) processor .

• 1991年7月3日，苹果公司和IBM公司两大软件公司，签定了建立新的联合软件公司的合同。联合公司将为RISC（精简指令集计算机）处理器开发一个新的操作系统。