第四週 Chp:4 系統單元的組成元件

Adapter card

 The adapter card (also expansion board, expansion card or accessory card) in computing is a printed circuit board that can be inserted into an expansion slot of a computer motherboard or backplane to add functionality to a computer system via the expansion bus.
One edge of the expansion card holds the contacts (the edge connector) that fit exactly into the slot. They establish the electrical contact between the electronics (mostly integrated circuits) on the card and on the motherboard.
A card in a computer on which additional chips can be mounted to expand the computer's capabilities.

計算的適配卡（也擴展板，擴展卡或附屬卡）是一個印刷電路板，可以插入到電腦主板或背板添加功能，通過擴展總線的計算機系統的擴充槽。
一個擴充卡的邊緣，擁有適合完全進入插槽的接觸（邊緣連接器）。他們建立卡和主板上的電子產品（主要是集成電路）之間的電氣接觸。
一卡在計算機上額外的芯片可以安裝擴展計算機的功能。

Expansion slot

 An opening in a computer where a circuit board can be inserted to add new capabilities to the computer. Nearly all personal computers except portables contain expansion slots for adding more memory, graphics capabilities, and support for special devices. The boards inserted into the expansion slots are called expansion boards, expansion cards, cards, add-ins, and add-ons.
A connection in a computer, esp. a microcomputer, to which a new board can be added to expand the computer's capabilities. 

在電腦的電路板可以插入到計算機上添加新功能的開放。幾乎所有的除外便攜式個人電腦中添加更多的內存，圖形處理能力，並支持特殊設備擴展插槽。插入擴充槽板被稱為擴展板，擴展卡，卡，加載項和加載項。
一個在一台電腦的連接，ESP。微機，一個新的董事會可以添加到擴展計算機的功能。