ICT SYSTEMS

Inputs / Processing / Outputs

Inputs / Processing / Outputs

Inpute.g. Data Input

Any Computer System

Feedbacke.g. a printer problem

Processe.g. A computer program

OutputDisplaying information to the user

Inputs devices

Web camera

Image scanner

Keyboard

Graphics tablet Digital camera

Mouse

Barcode scanner

Output devices

Speakers

CNC Equipment

Monitors

Printers

Trafficlights

Processing

The main processor within a computer system is called the CPU

CPU – Central Processing Unit

CPU basic tasks:

• Storage of Data

• Carrying out instructions such as opening computer programs

• Performing arithmetic and logic operations

(performing calculations and taking decisions)

• Control the flow of input and output signals within the system

Storage

Memory cards

Tape storage

USB Portable memory

Floppy discs - less now

CD / DVD / Blu-ray

Hard drives

Networks

• The linking of 2 or more computers

• Giving the ability to share: InformationFilesHardware

(i.e. printers)

What do we mean by a Computer Network?

Most computers are linked into a network using a Network Interface Card (NIC) Card

Slots into an available PCI Sloton a Motherboard

Wired or Wireless

Peer 2 Peer

Sharing files & data

Wired or Wireless

Both computers have the ability to print

Wired or Wireless

Question:How do you use Peer 2 Peer today?

LAN & WAN

Hub:Linking allComputerstogether

File server:Focal point of network, may host files andprograms forall to use

All computers havethe ability to print

Wired or Wireless Connections

Connecting Networks

Router:Connecting 2

networks together

Business Communication Methods

Company

Customers

Suppliers

Externalcommunications

Internalcommunications

Directors

Managers

Office staff

Factory staff

Sales staff

Accounts

Email & EDI

Benefits of Email

Email Problems

A permanent record of each message is saved by both the sender and receiverSaves paper (except when offices still print them out!)The same message can be sent to a large group of people at onceSpeed, messages are almost instantaneous

Spam: unwanted advertising, be careful what you sign up for..Computer virus's: sent as attachments

Sender must have exact address, unlike normal post

A basic understanding of computer literacy is requiredAttaching documents

Electronic Data Interchange(EDI) is the structured transmission of data between organizations by electronic means. It is used to transfer electronic documents from one computer system to another, i.e. from one trading partner to another trading partner.

Intranets / Extranets

Intranets

Millions of computers exchanging information around the world, its publicly accessible side is known to us as the World Wide Web and contains billionsof pages of information.

Works the same way as the internet, except it is limited within a business or organisation. Information can be shared within it, but not accessed by any external source.

Extranets

Basically an Intranet, but with external access is given to specified users,usually through a password based system.

The Internet