作业帮英语翻译These TTL encoders feature priority decoding of the inputs to ensure that only the highest-order data line is encoded.The ’147 and ’LS147 devices encode nine data lines to four-line (8-4-2-1) BCD.The implied decimal zero condition req
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英语翻译
These TTL encoders feature priority decoding of the inputs to ensure that only the highest-order data line is
encoded.The ’147 and ’LS147 devices encode nine data lines to four-line (8-4-2-1) BCD.The implied decimal
zero condition requires no input condition,as zero is encoded when all nine data lines are at a high logic level.
The ’148 and ’LS148 devices encode eight data lines to three-line (4-2-1) binary (octal).Cascading circuitry
(enable input EI and enable output EO) has been provided to allow octal expansion without the need for external
circuitry.For all types,data inputs and outputs are active at the low logic level.All inputs are buffered to represent
one normalized Series 54/74 or 54/74LS load,respectively.
这些TTL优先编码器解码特征的输入,以确保只有highest-order数据行
编码.'和' LS147 147编码数据线路设备(9)8-4-2-1七绝BCD码. 隐含的小数
零状态,不需要输入条件下,作为零编码,当所有的9个数据线条都处于高电平.
'和' LS148 148八个数据线路设备编码三线(4-2-1)二进制(八进制).层叠式电路
美国饭店协会教育学院,并使(使输入输出EO)已经被提供来允许八进制扩张,而不需要外部的
电路.对各种类型、数据的输入和输出被活跃的低电平.所有的输入是被缓冲的代表
54/74或54/74LS归一化系列之一负荷,分别.