Notes 2

Question 1

Von Neumann Architecture

Answer 1

CPU <-> Memory
<-> IO Devices

The CPU contains a control unit, an ALU (arithmetic and logic unit), and a register file

Question 2

Digital

Answer 2

has discrete values separated by gaps

ex. digital clocl

Question 3

Analog

Answer 3

continuous
no gaps

Question 4

High is also known as

Answer 4

power
5V
Vhigh
ON
True
Vcc
1

Question 5

Low is known as

Answer 5

GND
ground
0V
OFF
False
0

Question 6

_’s and _’s are literally the presence or absence of voltage on a wire (the digital part of a digital system)

Answer 6

1’s and 0’s

Question 7

AND truth table

Answer 7

A B | AB
0 0 0
0 1 0
1 0 0
1 1 1

Question 8

OR truth table

Answer 8

A B | A+B
0 0 0
0 1 1
1 0 1
1 1 1

Question 9

NOT truth table

Answer 9

A | A’
0 1
1 0

Question 10

XOR Truth Table

Answer 10

A B | A⊕B
0 0 0
0 1 1
1 0 1
1 1 0

A’B+B’A

exclusive or

Question 11

NAND truth table

Answer 11

A B | AB
0 0 1
0 1 1
1 0 1
1 1 0
Not A and B

Question 12

NOR truth table

Answer 12

A B | A+B
0 0 1
0 1 0
1 0 0
1 1 0

negating results of or

Question 13

And Gate

Answer 13

Draw it

Question 14

Or gate

Answer 14

Draw it

Question 15

Not gate

Answer 15

draw it

Question 16

XOR gate

Answer 16

draw it

Question 17

NAND gate

Answer 17

draw it

Question 18

NOR gate

Answer 18

draw it

Question 19

practice analyzing circuit diagrams

Question 20

draw a diagram from the equation : A + AB

Question 21

draw a diagram from the equation : (A+B)(B+C)

Question 22

A’B’ + AB

Question 23

Boolean Identities Part 1:
X+0 =
X+1 =
X1 =
X+X =
XX =
X*0=

Answer 23

X+0 = X
X+1 =1
X1 = X
X+X = X
XX = X
X*0=0

Question 24

Boolean Identities part 2:
X +X’ =
X * X’ =
(X’)’ =
X+Y =
X*Y =
X +(Y+Z) =

Answer 24

X +X’ = 1
X * X’ = 0
(X’)’ =X
X+Y = Y+X
XY = YX
X +(Y+Z) =(X+Y)+Z

Question 25

Boolean identities part 3:
X(YZ) =
X(Y+Z) =
(X+Y)(X+Z)=
(X+Y)’=
(XY)’=

Answer 25

X(YZ) = (XY)Z
X(Y+Z) = XY +XZ
(X+Y)(X+Z)=X+YZ
(X+Y)’=X’ n Y’
(XY)’= X’ + Y ‘