题目内容

sbit不可用于定义内部RAM的位寻址区,只能用在可位寻址的SFR上。

A. 对
B. 错

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AT89S51单片机采用的内部程序存储器的类型是()。

A. EPROM
B. SFR
C. FLASH
D. 掩膜ROM

单片机的应用程序一般存放于()中。

A. RAM
B. ROM
C. SFR
D. CPU

AT89C51单片机片内ROM的地址范围是()。

A. 00H~7FH
B. 0000H~FFFFH
C. 0000H~0FFFH
D. 80H~FFH

The following terms are discussed in Dialogue 1 _____.(多选)

A. stuff to be supplied for processing
B. delivery period of time
C. ownership transfer of the equipmentat the expiration of the contract
D. in conformity with the contract
E. quality of the processed products
F. processing charges
G. size of order

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