.
16 bit
8 bit
32 bit
64 bit
8 bit
16 bits
24 bits
3o bits
4
5
6
7
Direct addressing mode
Register indirect addressing mode
Immediate addressing mode
Indexed addressing mode
00-15H
00 - 1FH
20 - 2FH
30-7FH
Copies the content of memmory location 4500H to 4501H
Copies the content of memmory location 4500H to 4600H
Copies the content of memmory location 4501H to 4500H
Copies the content of memmory location 4600H to 4500H
20H
EFH
F0H
E0H
16KB
32KB
64KB
128KB
Programmable timer
USART
Keyboard/display interface
Programmable peripheral interface
1
2
3
4
00 -7FH
1F-7FH
80 - FFH
8F - FFH
Compare the lower nibble of A with that of B
Complement Accumulator
Compare the lower nibble of A with upper nibble of A
None of These
06H
08H
07H
10H
4
5
6
7
EXTERNAL INT0(IE0)
TIMER 0
EXTERNAL INT1(IE1)
TIMER 1
40 pins and 5V
20 Pins and 8V
40 Pins and 8V
20 Pins and 5V
No. of 1s in Accumulator is odd
No. of 1s in Accumulator is even
No. of 0s in Accumulator is odd
No. of 0s in Accumulator is even
4
8
12
16
PCON
DPTR
PSW
TCON
Direct addressing mode
Indirect Addressing mode
Register indirect addressing mode
Immediate Addressing Mode
8255
8259
8279
8251
8 bit
16 bits
24 bits
3o bits
8 bit
16 bits
24 bits
3o bits