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Author Question: Which external resistor is necessary to cause a 25 msec pulse at the output of a 74121 monostable ... (Read 34 times)

asd123

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on: Jul 28, 2018
Which external resistor is necessary to cause a 25 msec pulse at the output of a 74121 monostable multivibrator when joined with a 10 F external capacitor?
 
  A) 3.6 K resistor B) 20 K resistor C) 4.7 K resistor D) 10 K resistor

Question 2

Determine the contents of the accumulator after the execution of the following:
  MOV A, 3CH; A = 00111100
  MOV R4, 66H; R4 = 01100110
  ANL A, R4; A = AND R4
 
  A) 24H B) 30H C) 27H D) 28H


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triiciiaa

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Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

A


asd123

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Reply 2 on: Jul 28, 2018
Wow, this really help

FergA

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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