Understanding Computers: Memory, Logic Gates, and Engineering Drawing, Slides of Civil Engineering

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Understanding

Computers

Basic

Building

Blocks

Memory

Flip

Flops

a

circuit

made

with

transistors

and

stores

one

bit

of

a

binary

number



SIMM - single in-line memory module



a large collection of flip-flops

Flip-Flop

Input

Output

Latch

Basic

Building

Blocks

CPU

Central

Processing

Unit

Clock

square

wave

voltage

Processors

Logic

Gates

(Made

with

Transistors)

AND,

NAND,

OR,

NOR,

NOT,

XOR

(See

chalkboard)

Electrical

Engineering

Team

Exercise

Logic

Gate

Investigations

What

kind

of

logic

gates

are

these?

Example

Problem

What

would

be

the

truth

table

for

the

logic

circuit

shown

in

figure

4.18(a)?

A B

Y

Example

Problem

What

would

be

the

truth

table

for

the

logic

circuit

shown

14.8(b)?

A B

Y

Team

Exercise

Minutes

What

would

be

the

truth

table

for

the

logic

circuit

shown

below?

A B

X Y

Note this is similar to the homework problem.

Team

Exercise

Minutes

What

would

be

the

truth

table

for

the

logic

circuit

shown

below?

A B

X Y

Note this is similar to the homework problem.

Flowchart

Symbols

Input/Output Start/Stop

Branch TestCalculation Process Flow

Flowchart

Example

Define the

problem

Readinput Solve theproblem

Can I solve this?

Outputresults

What do I need

to know?

Ask for more input

Can I solve this?

yes

no

Not available

at this time

yes

no

Begin (again?)

End

Example

Sketch

a

simple

flowchart

that

will

find

the

sum

of

two

number

and

their

difference.

Example

Each

month,

the

electric

company

bills

consumers

according

to

the

following

schedule:

Electricity

Usage

(kWh)

Rate

($/kWh)

Energy

Energy

Energy

Prepare

a

flowchart

that

calculates

the

bill

for

a

customer.

Start

Example

: Sketch a flowchart

that will find the smallestnumber in a series of 100numbers.

I = 1 Min=NI = I+

Yes

Input N

Stop

Output Min

I>100? N<Min?

No

No

Yes

Input N

Project

One

Hints for your Notes