Answer / vivek

5 intr
2 for timer 0 & 1
2 for external intr
1 for serial intr

1more is there for timer 2 but in 8052

Answer / gaurav

6 intrupts
5 are maskable
1 is reset which is not maskable

Answer / niranjan

there r 5 interrupts excluding reset.. and these can be
masked..
2 for timer 0 & 1
2 for ext int
1 for serial int

Answer / gaurav pathak

In reality only 5 interrupts are available in 8051, but many
manufacturers data sheet state that there are 6 interrupts
since they include reset.
1)Reset
2)Two interrupts are for Timers. One for timer0 & other for
timer1.
3)Two interrupts are set for hardware external hardware
interrupts. Pin no. 12 & 13 in port 3 & for the external
hardware interrupts INT0 & INT1.
4)Serial communication has a single interrupt that belongs
to both transmit & receive.

Answer / ajay kumar yadav

6 intrupts

Answer / prashanth

5

Answer / vijay kishore

5 Excluding Reset:
EXT0 -- Interrupt Number 0
TIMER0 -- Interrupt Number 1
EXT1 -- Interrupt Number 2
TIMER1 -- Interrupt Number 3
SERIAL -- Interrupt Number 4

In the order of Interrupt Number as written in Interrupt
Vector Table.

TIMER2 --- Interrupt Number 5 (for 8052).

Answer / prinsai

yes 6 interrupts
2 external
2 timer
and 1 serial

Answer / damodhar

there 6 interrupts 3 external and 3 internal

External :--
1) Reset
2) Two Ext inte.

Answer / ajay kumar yadav

2 intr

jkms flip flop applications

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