# Control Unit - Q5

The size(in bytes) of the control memory of a horizontal control unit If the following specifications must follow.
$(I) 18$ control lines
$(II) 16$ status bits
$(III) 1024$ words in the control memory

edited Jun 9

@getgatebook

Sir the question should have explicitly mentioned in what units we would have to express the size of control memory..

or at least 1 word= ?? bits

If we assume it is  in byte, then 5632 bytes is the answer
answered Jun 9 by (1,720 points)
 $18$ $\log_2{16} = 4$ $\log_2{1024} = 10$
$\frac{32\times 1024}{8} = 4096 \text{ bytes}$