ENGR 356 Basic Computer Architecture
First Test
(929201 0)
Nahe
Must show work.
Make sure to label all signals.
Minimal cost is always a requirement in design problems.
1. (16 points) a)
Express the hexadecimal number 5D.7 as 5place (is, 5digit) octal and decimal numbers while
maintaining as much accuracy as possible.
b)
Express the decimal number
5
1.4 as 12bit
binary
and BCD numbers while maintaining as much accuracy
as possible.
2.
(16
points) For the circuit shown, construct a truth table that shows the output, F, as a function of inputs, A,. B, C,
and
D.
Also, express the function, F, in sumof minterms.
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(16 points) Simplify the logic expression to minimum number of literals using only Boolean algebra.
F
=
A'C'+A'C(B+D')+B(A+A'C)(C+Et)
4. (16 points) Giving the function f
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 Fall '08
 Valverde
 Computer Architecture, Binary numeral system, Decimal, Binarycoded decimal, digit BCD number, count twolevel implementation

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