Early computers required input in the form of punched cards.早期的计算机要求以穿孔卡的形式输入信息。Press the return key to enter the information.按回车键输入信息。You have to enter the information in a specific order.你必须按照特定的顺序输入信息。The computer gets its input from a keyboard or mouse.计算机通过键盘和鼠标输入信息。