英语翻译
Port1andport2areeach8-bitwideandhaveidenticalcharacteristics.Datawrittentotheseportsarestaticallylatchedandremainsunchangeduntilread.Asinputporttheyarenon-latching,i.e.inputsmustbepresentuntilreadbyaninputinstruction.InputsarefullyTTLcompatibleandoutputwilldriveonestandardTTLload.
Timer/CounterThe8048containsacountertoaiduserincountingexternaleventsandgeneratingaccuratetimedelayswithoutplacingaburdenontheprocessorforthesefunction.The8-bitbinarycounterispresettableandreadablewithtwoMOVinstructionswhichtransferthecontentsoftheaccumulatortothecounterandviceversa.
蓝海回答:
端口1和端口2每个都是8位宽,有相同特征.写入这些端口的数据被静态锁存,也保持不变,直到读取.因为输入端是非闭锁的,也就是说必须要有输入,直到读取输入指令.投入充分TTL兼容和输出,将载入一个标准的TTL负载.
定时器/计数器
8048包含一个计数器来帮助用户计数以处理外部事件,并在不加重那些功能模块负担的情况下生成的延误时间.8位二进制计数器是可调整和可读两种传送指示转移的内容,蓄电池反之亦然.
没学过什么单片机,所以有些地方可以翻的不对,你再核对下吧