Notes 7

Question 1

register file

Answer 1

the place where all the registers are

Question 2

S’R’ latch logic table

Answer 2

S’ R’ | Q Q’
0 0 1 1 :(
0 1 1 0
1 0 0 1
1 1 Q Q’

Question 3

What does the S’R’ latch circuit do?

Answer 3

S sets Q
R resets Q

If both are 0, the the circuit stores Q

Question 4

Know know to draw an SR latch

Answer 4

look at picture

Question 5

Controlled SR latch logic table

Answer 5

C S R | Q Q’
0 X X Q Q’
1 0 0 Q Q’
1 0 1 0 1
1 1 0 1 0
1 1 1 1 1 :(

if C is 0, opaque
if C is 1, transparent

Question 6

what does the control do on the controlled SR latch

Answer 6

if C is 0 then the value is stored
if C is 1 then the value can be set

Question 7

know how to draw a controlled SR latch

Answer 7

look at picture

Question 8

know how to draw D latch

Answer 8

look at picture

Question 9

what does a d latch to in plain english

Answer 9

if C is off keep Q the same
if C is on Q becomes D

Question 10

edge triggered d- flip flop

Answer 10

when the clock goes up, it follows D for a cycle

Question 11

know what a d flip flip looks like

Answer 11

look at picture

Question 12

watch videos of d flip flip

Question 13

what does a d flip flip do in plain english

Answer 13

at the instant that the clock turns positive, it captures the current value of D

Question 14

in effects, a D-flipflop is a …

Answer 14

one bit register

Question 15

know how two build a four but register parallel load

Question 16

know how to draw register file connecting to alu