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What does the unsigned decimal value 99 look like in binary using 8 bits? What do the signed integers 300 and +254 look like in

  1. What does the unsigned decimal value 99 look like in binary using 8 bits?

  2. What do the signed integers 300 and +254 look like in binary using 10 bits and sign/magnitude integer representation?

  3. What is the value of the 8-bit binary quantity 10010111 when it is interpreted as a sign/magnitude integer?

  4. Using 4 bits and twos complement representation, what is the binary representation of the following signed decimal values:

    1. +6

    2. 3

  5. Perform the following 5-bit binary addition showing the carry bit that propagates to each column. Assume that the numbers are unsigned binary quantities:

    01110

    + 01011

  6. What does the three-character string X+Y look like internally using the 8-bit ASCII code given in table below? What does it look like in 16-bit Unicode? (Go to www.unicode.org to find the specific code mappings for these three characters.)

  7. Using 10 bits to represent the mantissa (sign/magnitude) and 6 bits for the exponent (also sign/magnitude), show the internal representation of the following two values:

    1. +0.25

    2. 32 1/16

  8. Explain exactly what happens when you add a 1 to the following 5-bit, twos complement value: 01111

  9. Explain exactly what happens when you perform addition on the following two sign/magnitude integer values:

    00111 (+7)

    +01110 (+14)

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