Data Linkage and a Scanner!

Static and Dynamic

Static!? - data is seperate, there is no link
"when you copy a file, e.g a spreadsheet and change the original ....

The Copy will NOT change!"


Dyanamic - data is linked
"when you copy a file, e.g a spreadsheet and change the original ....

The Copy WILL change!"

OCR!? - Optical Character Recognition
Hardware? - Scanner
Software? - OCR Software

This allows us to scan a hard copy of a file and it picks up the text (recognises text) and you can edit it!

Saves you re-typing!

The Acts

Freedom of Information Act

Copyright, Designs and Patents Act

*if you download pictures, DVDS, movies, songs, music, without permission or paying for it

Computer Misuse Act

*Hacking and Viruses

Data Protection Act
Data Subject - person who the info. is about
Data Controller - person who holds info.
Data Commissioner - got to register with him first
Data User - person who will access info

Data Subject Rights

1. to see info (not always)
2. compensation if the act is broken


Companies must ....
1. accurate, up to date, correct
2. keep it for no longer than necessary
3. take measures for security

WIMP/GPP/HCI

WIMP

Windows Icons Menus Pointer - The interface we use to communicate with the computer GUI!

HCI
Human Computer Interface

GPP

General Purpose Package
multi purpose, can use it to do more than one task (could write a letter in Spreadsheet!)

Databases
Spreadsheets
Word Processing
Expert System
Graphics
Web Page Design
Presentation

OS - Operating System

Several Jobs the Mummy OS does are ....


Reports Errors
Schedules Tasks (Anti Virus Check, Updates)
Controls Security
Controls where items are saved into memory
Organises Input and Output Devices

Yesterday! Types of Access

Sequential and Random/Direct Access

Seq. you must go through all memory locations in turn til you find the one you require (Britney Spears tape Lucky Track 9!)

Random/Direct can skip to the memory location you need instantly! (Britney CD!)

MAIN MEMORY

There are two types of main memory

RAM & ROM

Random Access Memory

Read Only Memory

RAM is temporary - when the power is turned off it is erased/reset.

ROM is permanent - used to store important information/programs permanently.

Welcome to 3F 2010 Blog

Lesson 1 - the 5 box diagram

Processor - The Brain of the Computer System, make decisions

Input Devices - mouse, keyboard, webcam, controllers, scanner, touch screen, microphone, camera

Output Devices - monitor, projector, speakers, printer, headphones.