@
ccurtis , sir . i just want to know , if this circuit can be aLso impLemented using 7400 series of ic's ?
if yes , can i design a combinationaL circuit using 7495 (4-bit shift register) , 7483 (4-bit fuLL adder) , 7447 (7segment decoder)
for dispLay .. and with a 555 timer ?
i need this so freakin bad . our instructor task us to design a combinational circuit that wiLL impLement the following :
- 2 input (using switches)
- 2 digit/input (max vaLue 99) : 1100011 <- 7-bit
-
bin to bcd
- bcd to 7segment -
for dispLay
seLector (1-4 Line decoder)
00 ->
01 -> 7 bit fuLL adder (pureLy Logic circuit ) no speciaL ic to be used ..
10 -> 7 bit fuLL adder/subtractor (pureLy Logic circuit )
11 -> 7 bit muLtipLier (pureLy Logic circuit)
and now for the outputs
max vaLue for the sum is 198 (11000110) . 8-bit binary
max vaLue for the difference is 99 (1100011) . 7-bit binary
max vaLue for the product is 9801 (10011001001001) . 14-bit binary
then finaLLy . convert
bin to bcd again . to s
even segment decoder (
for display)
pLs heLp me out of this
. i dont want to use 'k maps' in that 14-bit binary output . it brokes my head . hehehe ^.^
+5V