Jawaharlal Nehru Technological University Hyderabad 2011-3rd Year B.Tech Computer Science and Engineering (CCC) s- EMBEDDED SYSTEMS - Question Paper

Code No: C3CS02
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
B.Tech (CCC) III Year exams February - 2011
EMBEDDED SYSTEMS
(Computer Science Engineering)
Time: three Hours Max.Marks:100
ans Any 5 ques.
All ques. Carry Equal Marks
- - -
1.a) Compare and contrast top-down and bottom - up design?
b) At what stage of the design methodology would we select a programming language?
Explain? [10+10]
2. discuss the functions of every pin in 8051? [20]

3.a) Write assembly language instructions to copy the byte in TCON to register R2 using at
lowest 4 various methods?
b) List out the assembly language instructions to perform the subsequent
operations: set timer T0 to aqn initial setting of 1234h. Use the direct
address with an immediate number to set TH0 and TL0.
c) List out the assembly language instructions to put the number 8Dh in RAM
locations 30h to 34h. [6+8+6]

4.a) discuss the Unsigned and Signed addition in 8051?
b) discuss the various forms of incrementing and decrementing opcodes of
8051? [10+10]

5. With a circuit diagram discuss the BIGKEY program for a large matrix keyboard?
[20]
6. elaborate rules that the interrupt routines in most RTOS environments should follow?
Explain? [20]
7.a) What is the recommended task structure? discuss its pseudo code?
b) elaborate the advantages of the recommended task structure? [12+8]

8.a) List out the differences ranging from Risc and Cisc systems?
b) discuss the features of assembly level language? [10+10]

Earning:   Approval pending.