Single Dot matrix display interfacing with 8051 based Microcontroller

Rows are connected to Port lines directly from where it will receive the cathode values. In other words, the dot which has to glow, its row pin should receive a logic '0' from the Microcontroller. The columns are connected to anodes, therefore the line which is to be glown should receive logic '1' from the shift register, which in turn will receive logic '1' from the Microcontroller on it's SI pin and a +ve edge on the CLK pin of the shift register.

IIT Blog regarding Microprocessor and Microcontrollers

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Question bank EDS

a.       Draw the structure of RS232 and explain any 4 pins

b.      Describe in detail any 3 software development tools

c.       Explain the concept of DMAC with neat diagram

d.      Draw the structure of port 0 and explain its operation in input mode

e.      Compare i2c and can bus

f.        Explain the different services of RTOS

g.       List the sequence of events that take place while executing an interrupt

h.      List the serial communication protocols and explain I2C bus with neat sketch

i.         Explain in detail memory organization of 8051

j.        Draw the formats of TCON and TMOD registers and explain the bits

k.       Identify the Addressing modes for the following instruction

MOV A,#20H

MOV 80H,A

MOV @R1,35H

MOV A,R0

l.         Draw the interfacing diagram to interface LCD with 8051 and write a program in C language to display “WELCOME” on lcd screen.

m.    Explain starvation and deadlock in detail

n.      Draw the pin diagram of 8051 and explain each pin

o.      Draw and describe Harvard Architecture and compare with Princeton architecture

p.      Describe any 4 bit handling instructions of 8051

q.      Draw the format of SCON and describe its functionality

r.        Draw PSW of 8051. State the function of each bit

s.       Divide the data in RAM location 13H by the data in RAM location 14H. Then restore the original data in 13H by multiplying the answer by the data in 14H. Use assembly language for 8051 controller.

t.        Write a program in C language to transfer MSBTE serially at 9600 baud rate with 1 start bit and 1 stop bit

u.      Enlist the various interrupts of 8051 with their priorities, vector locations and cause of interrupts

Question bank for MAP

a.       Explain the following assembler directives:

1.       ASSUME

2.       DUP

3.       ENDS

b.      Differentiate between near and far calls

c.       Draw neat labelled architecture of 8086

d.      Explain any 3 addressing modes of 8086 with example

e.      List the steps in physical address calculation with example

f.        Define procedure and explain the directives used in the procedure

g.       How queuing speeds up processing of 8086 operations (explain with example)

h.      Explain CALL and RET instructions

i.         State the function of the following pins

1.       INTR

2.       BHE^#

3.       DEN^#

j.        Draw the flag register of 8086 and explain any 3 flags

k.       Draw neat labelled diagram of octal latch 74LS373 and explain the same

l.         Explain the following instruction 1. XLAT                2. XCHG

m.    Explain the following instructions 1. AND              2. TEST                  3. LEA

n.      Write an assembly language program to print the reverse of string

o.      Write an assembly language program to transfer 10 bytes of data from one memory location to another. Also draw flowchart

p.      Write a program using procedure to find the factorial of a number

q.      Write a program to add, subtract two BCD numbers

r.        Draw the interfacing diagram of octal latch with 8086 microprocessor

s.       Draw the maximum mode diagram of 8086 with proper labelling

PST Questions

PST questions:

1.      List the ports available in 8051. State alternate functions of port 3

2.      Draw the structure of Port 0 and explain its operations in input mode

3.      Draw the pin diagram of 8051 and state function of each pin

4.      Write a program in C language to transfer the message “WELCOME” serially at 9600 baud rate, 8 bit data, 1 start bit and 1 stop bit

5.      List the sequence of events that take place while executing an interrupt

6.      Draw the functional block diagram of 8051

7.      Draw the formats of TCON and TMOD registers and explain the bits

8.      Write a program in C to get data (AA H) from Port 0 and send it to port 1 of 8051

9.      Identify the Addressing modes for the following instruction

a.       MOV A,#20H

b.      MOV 80H,A

c.       MOV @R1,35H

d.      MOV A,R0

10.  Write a program in C to generate square wave on P1.2 bit, use interrupt for timer

11.  Draw and describe Harvard Architecture

12.  Explain in detail memory organization of 8051

13.  Explain in detail mode 0 of a timer available in 8051

14.  List the addressing modes of 8051. Also give example of each mode

15.  Draw the structure of Port 0 and explain its operations

16.  Give an overview of 8051 family

17.  Write a program in C language to transfer letter M serially at 4800 baud rate, 8 bit data,1 stop bit

18.  Describe any 4 bit handling instructions of 8051

19.  Draw the format of SCON and describe its functionality

20.  How many timers/counters are available in 8051. When are they used? What is the initialization instruction

21.  Draw PSW of 8051. State the function of each bit

22.  Enlist the various interrupts of 8051 with their priorities, vector locations and cause of interrupts

23.  Divide the data in RAM location 13H by the data in RAM location 14H. Then restore the original data in 13H by multiplying the answer by the data in 14H. Use assembly language for 8051 controller.

1.      Write a program in C language to display “MSBTE” on LCD

PTT 1

Prepare these topics well, related questions may be asked in PTT - 1 

2nd year:

Architecture of 8085
Physical address calculation in 8086
Flag register of 8086

3rd Year:

Addressing modes of 8051
Architecture of 8051
Timer register
Port structure

Working Of 8085 Microprocessor Animated

Aliakbar Nathani: Working Of 8085 Microprocessor Animated