,

2009 22/7/2009 : 2h45

: . ______________________________________________________________________________

1 (2,5 )

( ) ( )15,11,6,5,4,3,1=ABCDF

: . NAND ( ) . NOR , : i. F,

ii. F ( ).

. NOT . ROM

2 (3 )

. ,

. : i. JK flip-flop ii. T flip-flop iii. D flip-flop iv. 8-1 D flip-flop T flip-flop v. ROM 16-1 ( )

vi. NAND J K . .

;

3 (1,5 ) (bits) CP. : i. . ii. 101 , 01. iii. , 0100 111, 10. iv. 00.

4 (3 ) bit CP. : i. 1100 24 .

ii. 24 1100 10100. D flip-flops, - nand. 1: Up Down UD UD=0 UD=1 . 2: .

5 (1,5 )

( ) . 3 bit ( ) Boole . ; . - 4 bits.