/
Computer Logic Computer Logic

Computer Logic - PowerPoint Presentation

kittie-lecroy
kittie-lecroy . @kittie-lecroy
Follow
399 views
Uploaded On 2016-05-19

Computer Logic - PPT Presentation

Distinction between analogue and discrete processes and quantities Conversion of analogue quantities to digital form Using sampling techniques Storage units Digital Data Digital data is represented by ID: 326420

digital analogue data 1024 analogue digital 1024 data bytes storage convert units computer byte bit unit store bits 5890

Share:

Link:

Embed:

Download Presentation from below link

Download Presentation The PPT/PDF document "Computer Logic" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.


Presentation Transcript

Slide1

Computer Logic

Distinction between analogue and discrete processes and quantities. Conversion of analogue quantities to digital form. Using sampling techniques. Storage units. Slide2

Digital Data

Digital data is represented by 1s and 0s 1 represents

that the switch is

on

0 represents that the switch is off Digital data (1s and 0s) is known as binary. A computer system only understands digital data Slide3

Analogue Data

Analogue data is represented by analogue signals

An example of analogue data are

sound waves

from our voice Analogue data must be converted to digital data for the computer to understand it.Slide4

Analogue to Digital Data

ATD As we said before analogue signals need to be changed to digital data to be understood by

our computer.

ATD devices

convert analogue signals to digital dataSlide5

Digital Data to Analogue Signals

DTA For us to understand computer language the digital data needs to be converted to analogue

data

DTA

devices convert digital data to analogue signals, ex: modem

Dear

John,Is

it OK if we meet at 6?

10010010

ISP

10010101

Dear John,

Is it OK if we meet at 6?Slide6

Comparing Analogue to Digital devices

Analogue device

Digital

device

Continuous signalVarying valuesValues not rounded upDifficult for precise reading

Not a continuous signal

Values rounded up

Easy and clear to read

Becoming more precise Slide7

Analogue and Digital Graphs

Analogue graph

Digital graph

Changing an Analogue graph to a Digital graph is called

Sampling Slide8

Units of Storage

A computer has many different units of storage The storage units we will be going through today are;

Bits

Bytes

Kilobytes Megabytes GigabytesTerabyte sEach storage unit is made up of a number of bits Slide9

Bit

A bit is the smallest unit of storage within a computer A bit can only store a 1 or a 0

A bit is too small to store anything, hence they are joined to create other

larger storage

units. 1 BitSlide10

Byte

A byte is made up of 8 bits One character is made up of 8 bits, hence 1 byte can hold 1 character. To store the word

byte

you would need 4 bytes

1 Byte

8 BitsSlide11

Kilobytes

Bytes are still very small to store many files so a larger storage unit is used, a Kilobyte1024 bytes are grouped together to create a kilobyte

1 KiloByte

1024 BytesSlide12

Units of Storage

Unit

Equivalent

Bit

(Can only store 0 or 1)

Byte

8 Bits

Kilobyte (KB)

1024 Bytes

Megabyte (MB)

1024 Kilobytes

Gigabyte (GB)

1024 Megabytes

Terabyte (TB)

1024 GigabytesSlide13

Converting Units of Storage

In order to convert small units to large ones we need to divide

If we want to convert 7680 Bytes into KB (smaller to bigger unit

);

1 KB = 1024 Bytes ? KB = 7680 Bytes 7680/1024=7.5KBSlide14

Converting Units of Storage

In order to convert large units to smaller ones we need to multiply If we want to convert 3MB into KB (bigger to smaller unit)

1 MB = 1024 KB

3 MB = ? KB

3 x 1024 = 3072 KBSlide15

More examples to work out

Convert 4MB into kBConvert 5890 Bytes into KB

Convert 2GB

into

KB(round up your answers when needed. eg; 4.6 becomes 4) Slide16

Answers

Convert 4MB into kBMB = 1024 KB

4MB = ? KB

4 x 1024 = 4096MBSlide17

Answers

Convert 5890 Bytes into KB1024 bytes = 1 KB5890 bytes = ? KB

5890/1024 = 6KBSlide18

Answers

Convert 2GB into KB

1 GB = 1024 MB

2 GB = ? MB

1 MB = 1024 KB2048MB = ? KBIf I want to know how many bytes there are in 2GB what would my next step be?

2

x 1024 =

2048MB

2048 x

1024 =

2097152KBSlide19

Some typical storage devices

Device

Storage

Other

Possibilities

Floppy Disk

1.44MB

CD

700MB

DVD

4.7GB

8.7GB, 9.4GB

Pen Drive

8GB

2GB, 4GB, 16GB, 32GB

Blu Ray

25GB

50GB, 100GB

Hard Disk

500GB

1TBSlide20

Home – Work

Handout 02 (form3opt1.blogspot.com)