Author Question: An astable 555 timer is designed using the following external components: RA = 8.5 k, RB = 4.7 k, C ... (Read 61 times)

khang · **on:** Jul 28, 2018

An astable 555 timer is designed using the following external components: RA = 8.5 k, RB = 4.7 k, C = 100 pF. Calculate time HIGH (tHI).

A) 915 nsec B) 7.8 sec C) 22.3 sec D) 2.8 sec

Question 2

What does the instruction MUL AB do?

A) It multiples the value in the register times the value in register A.
B) It multiples the value in the accumulator times the value in register.
C) It multiples the value in the register A times the value in register B.
D) none of the above