Features of the 8254 programmable interval timer


Question 1) What do you mean by tri-state devices?

Question 2) Write down the advantages of using the Direct Memory Access.

Question 3) Explain the purpose of the following commands in 8086.

(i) AAD,

(ii) RCL

Question 4) Write down an 8086 assembly language program to multiply two 16 bit unsigned numbers to provide a 32 bit result. suppose that two numbers are stored in CX and DX.

Question 5) Write down the important features of the 8254 Programmable interval timer.

Question 6) What do you mean by a Sample and Hold circuit?

Question 7) Write down the advantages of the register indirect addressing mode in 8051 microcontroller?

Question 8) Write down an 8051 program to monitor PI continuously for the value 63H. It must get out of the monitoring only if P1=63H.

Question 9) How is the microcontroller used for the traffic light control application?

Question 10) Distinguish microprocessor from microcontroller in system design.

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Electrical Engineering: Features of the 8254 programmable interval timer
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