Quiz # 1 --- Assembly Fall 2004

1. Most new embedded designs are based on ____________- bit microprocessors.
2. Most new embedded designs are programmed in ____________.
3. What is the range of 24-bit signed integers? You may use 2^x notation in your answer.
4. What is the range of 24-bit unsigned integers? You may use 2^x notation in your answer.
5. Why might you choose a fixed-point format over a floating point format for an embedded application?
6. Convert the value 3.625 into 4.4 fixed-point format.
7. Convert the value -3.625 into 4.4 fixed-point format.
8. Convert the value -3.625 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. Can subtracting two signed numbers with the same sign ever result in a (signed) overflow?