Quiz # 1 --- Assembly Fall 2006

1. Name 2 embedded system appliation areas.
2. What is a popular language for writing embedded applications?
3. What is the range of 22-bit signed integers? You may use 2^x notation in your answer.
4. What is the range of 22-bit unsigned integers? You may use 2^x notation in your answer.
5. Why are might you choose a fixed-point format over a floating point format for an embedded application?
6. Convert the value 5.125 into 8.8 fixed-point format.
7. Convert the value -5.125 into 8.8 fixed-point format.
8. Convert the value -5.125 into single precision float format. Hint: the bias is 127.

   S

   E7

   E6

   E5

   E4

   E3

   E2

   E1

   E0

   M-1

   M-2

   M-3

   M-4

   M-5

   M-6

   M-7

   M-8

   M-9

   M-10

   M-11

   M-12

   M-13

   M-14

   M-15

   M-16

   M-17

   M-18

   M-19

   M-20

   M-21

   M-22

   M-23

9. Almost all modern computers use 2's compliment to represent signed numbers. Why?
10. Using the words "machine epsilon," explain why this loop will probably not stop:

    
    double x=0.0;
    
    while (x != 1.0) {
    
      x=x+1.0/3.0;
    
    }