Tuesday, 11 October 2011

Robots ...

5 parts of the Robot Arm
Waist
Shoulder
Elbow
Wrist
end effector (tool!)

Tools it uses
Spray Paint
Suction cup
welding bit
gripper
screw driver

Two types of Robot

Mobile - can move around
Three types of guidance for these
Magnetic - follows buried metal wires, if you want to change the layout you need to dig it all up
Laser -
Light - follows a painted white line by reflecting light - line could be affected by dirt etc!

Stationary - stay in the one place

Monday, 3 October 2011

Automated Systems

Automated Systems
What are Automated Systems
Humans provide the input
Machine/Robot/system carries out the process
Provides the output

Auto Sys in the home

* washing machine
* cameras
* sky +
* stereos
* microwaves
* dishwashers
* tumble dryers

Auto Sys in industry
* car manufacture
* coca cola factory
* irn bru factory
* tunnocks
* wool factory

Reasons why we use Auto Sys
* they are re-programmable
* faster than humans
* can work longer, 24/7
* do boring jobs
* more accurate than humans
* can do dangerous jobs

Tuesday, 30 August 2011

Databases

Searching!

Simple Search - search on one field

Complex Search - search on two or more fields

Simple Search

Simple search the forename field for "Brad" - finds everyone called Brad

Complex Search

Complex search on the forename field for "Reece" and the looks field for ">10" - would find Reece Mourning! : )

Friday, 26 August 2011

Databases!

There are three parts that make up a Database (Largest to Smallest they are ...)

Data File - the all the information, the whole database

Records - is all the information gathered on one person/subject

Fields - store one individual piece of information

Example Field Types

* Date/Time
* Numeric
* Text
* Graphic

Wednesday, 1 June 2011

Graphics Stuff

Crop
- when you cut out a specific bit from the image, removing unwanted parts

Scale
- increasing or decreasing the size keeping it in proportion without removing any parts

Rotate
- turning an image by an angle

Ware!!!!!!!!

The three categories of Software are ...


Freeware
+ Always Free
+ Can't sell it on to other people, but you can copy it and give to your pals

Examples Include - MSN Messenger, SKYPE, LimeWire, MS Paint, Windows MovieMaker

Shareware
+ Free Trial Period
+ Need to buy it after this period (money, no mario coins ...)
+ uninstall it if you don't need it after this time

Examples Include - Norton Anti-Virus, StopZilla (?),

Commercial Ware
+ You must buy from the beginning

Examples Include - Football Manager, FIFA, PES, COD, Microsoft Office, Windows XP (Operating Systems)

Wednesday, 23 March 2011

Software Development

High Level Languages
+ Written in an English like Language, means they are easier to understand than Low Level Languages - like 1010101's
+ Portable, means they can be used on different platforms (different Operating Systems, Processors)
+Must be translated before they can be executed

Translators
Interpreter
Translates and executes one line of code at a time
+ excellent for debugging, as it stops when an error is found and will not move beyond that line
- needs to be always running in memory

Compiler
Translates and executes the full program at once
+ gives an executable file once the program has been successfully translated
- not great for debugging as it returns all the errors at once (could be loads!)