单项选择题

案例分析题

Tile hardware are the parts of computer itself including the （） (CPU) and related microchips and micro -circuitry, keyboards, monitors, case and （） (including floppy, hard, CD, DVD, optical, tape, etc...). Other extra parts called （） or devices include mouse, printers, （） , scanners, digital cameras and cards (sound, colour, video) etc... Together they are often referred to as a （） or PCs.

Together they are often referred to as a （） or PCs.

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