【简答题】Today anyone will accept money in exchange for goods and services.People use money to buy food, furniture,books,bicycles and hundreds of other things they need or want. When they work, they usually ge...
【简答题】下列程序段,完成内部RAM的BUF区LEN个字节数据和的计算,和的低8位放在累加器 A中,高8位放在寄存器B中,请将程序填充完整。 MOV R0,#BUF MOV R7,#LEN MOV R6,#0 ;和低8位 MOV B,#0 ;和高8位 LOOP: MOV A,R6 ADD A,@R0 MOV R6,A MOV A,B ADDC A,#0 MO...
【简答题】阅读理解。 Today anyone will accept money in exchange for goods and services. People use money to buy food, furniture, books, bicycles and hundreds of other things they need or want. When they work, they u...
【简答题】Today anyone will accept money in exchange for goods and services. People use money to buy food, furniture, books, bicycles and hundreds of other things we need or want. When they work, they usually g...
【简答题】下列程序段,完成内部RAM的BUF区LEN个字节数据和的计算,和的低8位放在累加器 A中,高8位放在寄存器B中,请将程序填充完整。 MOV R0,#BUF MOV R7,#LEN MOV R6,#0 ;和低8位 MOV B,#0 ;和高8位 LOOP: MOV A,R6 ( ) MOV R6,A MOV A,B ADDC...
【判断题】交流发电机的励磁方法为:先他励,后自励。
【单选题】已知A=20H,R0=30H,PSW=80H,则指令 ADDC A, R0 执行后,A=( )
【单选题】设( A ) =01010110B ( 56 的 BCD 码),( R3 ) =01100111B ( 67 的 BCD 码),( CY ) =1 。 执行指令: ADDC A,R3 ; DA A ; 结果是?
【单选题】设(A)=53H,(R0)=0FCH, CY=0,执行指令ADDC A,R0;结果( )
A.
( A ) =4FH , CY=1 , AC=0 , OV=0 , P=1
B.
( A ) =4FH , CY=0 , AC=0 , OV=0 , P=1
C.
( A ) =34H , CY=1 , AC=0 , OV=0 , P=1
D.
( A ) =4FH , CY=1 , AC=0 , OV=1 , P=1