An interface unit or circuitry that converts data to and from the representation used by a particular peripheral device or class of peripheral devices ; for example , a device that converts between bit serial and bit parallel and resolves differences in transmission speeds 一種接口部件或電路,用來把數(shù)據(jù)轉(zhuǎn)換成某種特殊的外圍設(shè)備上的表示或某類外圍設(shè)備上的表示或把此種表示轉(zhuǎn)換成數(shù)據(jù)。例如,一臺在串行位和并行位之間作轉(zhuǎn)換且解決傳輸速度差別的設(shè)備。
8051 processor testing system was designed to test the sample in 16 bits parallel interface . because of the limitation of the testing system interface , however , easyarm2131 based on arm7tdmi - s was selected to use in 18 bits parallel interface test . and it sufficed the higher bits parallel interface test such as 18 bits , 24 bits , or more , while 8051 testing system ca n ' t do 為測試16bit并行接口,設(shè)計(jì)了以8051芯片為處理器的測試機(jī);在測試18bit并行接口時(shí),由于8051測試機(jī)的接口限制,采用了基于arm7tdmi - s核的easyarm2131開發(fā)板系統(tǒng),解決了8051無法滿足18bit乃至以后可能用到的24bit甚至更高的并行接口問題。