Computer literacy
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Computer literacy. Student name: sahar Instructor: issa Rosary school jabal amman. Topics. Counting system. Network. Counting system. 1) Binary system. 2) Decimal system. Binary system. Binary system: the numbering system that represent all numbers using just 2 symbols are (1,0).

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Computer literacy

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Computer literacy

Computer literacy

Student name: sahar

Instructor: issa

Rosary school jabalamman


Computer literacy

Topics

Counting system

Network


Computer literacy

Counting system

1) Binary system.

2) Decimal system.


Computer literacy

Binary system.

Binary system: the numbering system that represent all numbers using just 2 symbols are (1,0)

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Computer literacy

Decimal system.

Decimal system: are consists of 10 symbols {0-9}


Computer literacy

How to convert from decimal to binary?

A) Comparison with descending powers of two and subtraction

B) Short division by two with reminder


Computer literacy

Comparison with descending powers of two and subtraction

1) To do this you have to double the number starting from 1.

2) You have to start subtraction the number you have from the doubling list but the number need to be the same or less


Computer literacy

3) After you finish the numbers you choose from the list you put under it 1 and what you didn’t use you put 0 under it.


Computer literacy

156

-128

28

-16

12

-8

4

-4

0

The operation

128-64-32-16-8-4-2-1

1 0 0 1 1 1 0 0

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Computer literacy

Short division by two with reminder

When you want to do this operation you do a short division by two with remainder if the remainder was 0 you put 0 if it was 1 you put 1 when the answer is 1 you finish


Computer literacy

The operation


Computer literacy

How to convert from binary to decimal?

A) Table method

B) Doubling method


Computer literacy

Table method

On this method you have a numbers of {0&1}, on each number you write the doubling numbers from 1. you across out number 0 and combines the left numbers and the equal number represent the original number


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The operation

16 8 4 2 1

1 1 0 1 1

27

=16+8+2+1

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Computer literacy

Doubling method

On this method you double your number and add the next digit of the base two representation starting from zero & working from left to right


Computer literacy

The operation

000110

0*2+0=0

0*2+0=2

0*2+0=0

1*2+1=3

3*2+1=7

7*2+0=14

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Computer literacy

Computers networks

The computers network: is a system of interconnected computers that share files and other resources like printer. Data is transmitted in a digital form from one computer to another computer at a very high speed.


Computer literacy

Computer network advantages

1) Sharing resources (files, applications or hardware, an internet connection, etc)


Computer literacy

2) Communication between people (email, live discussions, etc.).

3)Communication between processes (such as between industrial computers).

4) Multiplayer video games.

5) Exchange information.


Computer literacy

Type of computers


Computer literacy

Network topology

1)define

2) describes

3)types


Computer literacy

Network topology

The network topology defines the way in which computers, printers, and other devices are connected

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Computer literacy

Network topology

A network topology describes the layout of the wire and devices as well as the paths used by data transmission

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Network topology types

1)Bus topology

2)Ring topology

3)Star topology


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Bus topology

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Computer literacy

Ring topology

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Computer literacy

See you soon! Bye!


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