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

problem 2) prepare down the advantages of using the Direct Memory Access.

problem 3) describe the purpose of the following commands in 8086.

(i) AAD,

(ii) RCL

problem 4) prepare 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.

problem 5) prepare down the important features of the 8254 Programmable interval timer.

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

problem 7) prepare down the advantages of the register indirect addressing mode in 8051 microcontroller?

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

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

problem 10) Distinguish microprocessor from microcontroller in system design.