MC 2025

Front

What is the status of the carry flag (CY) after executing MOV A,#9C followed by ADD A,#64H?

Back

CY=1

Front

What is the status of the auxiliary carry flag (AC) after executing MOV A,#9C followed by ADD A,#64H?

Back

AC=1

Front

What is the status of the parity flag (P) after executing MOV A,#9C followed by ADD A,#64H?

Back

P=0

Front

How many pins does the 8051 microcontroller have?

Back

40

Front

How many 16-bit registers are there in the 8051 series?

Back

2

Front

How many timers does the 8051 microcontroller have?

Back

2

Front

How many interrupt sources can the 8051 handle?

Back

5

Front

What is the function of the carry flag (CY) in the 8051 microcontroller?

Back

Indicates an overflow in arithmetic operations.

Front

What is the function of the auxiliary carry flag (AC) in the 8051 microcontroller?

Back

Indicates a carry from the lower nibble in arithmetic operations.

Front

What is the function of the parity flag (P) in the 8051 microcontroller?

Back

Indicates whether the number of set bits in the accumulator is even or odd.