1、单选题：
What kind of device does the MCS-51 microcontroller belong to? ( )
选项：
A:32-bit device
B:16-bit device
C:4-bit device
D:8-bit device
答案: 【8-bit device】

2、单选题：
The operation of taking a number from memory into the CPU is called ( ).
选项：
A:EXECUTE
B:READ
C:FIND
D:WRITE
答案: 【READ】

3、单选题：
The 8951 microcontroller contains （ ）
选项：
A:EPROM
B:No memory
C:EEPROM
D:ROM
答案: 【EEPROM】

4、单选题：
What is the highest address in a memory system with 16 data lines? （ ）
选项：
A:65535
B:65534
C:63357
D:65536
答案: 【65535】

5、多选题：
What are the basic actions that a microprocessor can carry out?
选项：
A:Puttinga number into memory (WRITE)
B:Logical operations (bit manipulation)
C:Makingdecisions about the program route (jumps and subroutine calls)
D:Takinga number from memory (READ)
E:Arithmetic operations
答案: 【Puttinga number into memory (WRITE);
Logical operations (bit manipulation);
Makingdecisions about the program route (jumps and subroutine calls);
Takinga number from memory (READ);
Arithmetic operations】