STUPIDSID
1 (a)
Explain Special Function Registers (SFRs) of 8051.
5 M
1 (b)
Explain features of ARM-7 microcontroller.
5 M
1 (c)
Explain 8051 assembler directives.
5 M
1 (d)
Explain Digital Camera as an embedded system application.
5 M
2 (a)
For an 8051 system of 11.059 Mhz. Find how long it takes to execute each of the following instructions.
a) MOV R3, #55 b) DJNZ R2, Target c) LJMP d) SJMP e) MUL AB.
a) MOV R3, #55 b) DJNZ R2, Target c) LJMP d) SJMP e) MUL AB.
10 M
2 (b)
Design a microcontroller system using 8051 microcontroller, 4Kbytes of ROM and 8 Kbytes of RAM. Interface the external memory such that the starting address of ROM IS 1000H and RAM is C000H.
10 M
3 (a)
Draw and explain data flow model of ARM-7.
10 M
3 (b)
Explain addressing modes of ARM-7.
10 M
4 (a)
Explain IR communication system with basic transmitter setup. Write a program segment to vary speed of a DC motor using the remote transmitter keypad.
10 M
4 (b)
Write a program for a square wave is being generated at pin P1.2. This square wave is to be sent to a receiver connected in serial term to this 8051.
10 M
5 (a)
What is stack? How stacks are accessed in 8051? Explain operations of PUSH and POP instructions with example.
10 M
5 (b)
Write a program to blink all LED's connected to port P1 at a slow rate so that the blinking is clearly seen. Assume a frequency of 22MHz and that the system is using he 89C1. Use a crystal of frequency 22 Mhz.
10 M
Write short notes on following:
6 (a)
Design metrics of embedded system.
10 M
6 (b)
PCON and SCON registers of 8051.
10 M
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