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ASCII美国标准代码互换二进制二进制代码，仅使用2位数字，0和1 CD-R CD-RECORDABLE。CD/DVD可以将数据保存到CD-ROM仅读取CD/DVD/Blue-Ray CD-RW CD-CD-rewrable。A Cd/DVD that data can be saved to then then reused CPU Central Processing Unit Denary system Also known as the decimal system Hardware A computing object you can touch, such as a keyboard or a printer Input device A piece of computing hardware that can be used to enter data into a computer, such as a keyboard or a mouse Output device A piece of computing hardware that displays or outputs data, such as a monitor or a speaker RAM Random Access Memory RFID射频ID ROM仅读取存储软件一个计算机程序（您无法触摸的计算对象），例如Microsoft Word，Internet Explorer或Scratch Storage设备，用于永久记录或存储数据的计算硬件，例如硬盘驱动器或CD
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