Binary CodeBinary code is how the computer thinks/carry out instructions/save files. They only use 1's and 0's to carry out all tasks. What is optical storage?A method of reading and writing data to disc using a laser. A CD ROMA CD ROM is made out of 5 layers. One of the layers has bumps for the computer to read. To read the CD ROM it reflects a fun size laser over the bumps and flats going in a spiral that is 200 times smaller than a human hair and convert these into 1's and 0's- the language the computer reads. An example of optical storage is:
CD Vs Blue ray Vs DVDCD
DvD
Blueray
DefinitionAn output device is a piece of hardware that allows data or information to be 'extracted' from a computer. Examples
A cathode-ray tube monitor is an old type of monitor. They are heavy and take up a lot of desk space, so have mainly been place by flat screen monitors and run hot so can cause fires. However they are still used in the design industry as the colour accuracy and brightness are what designer needs. A thin film transistor has come down in price and have been replacing CRT monitors. They are light in weight and take up little desk space, which has good picture quality like CRT monitor- produce less glare so emits less radiation, but not as good colour accuracy and cannot be used by light pens so they CAD
If you want to hear music or sounds from your computer, you will have to attach loudspeakers. They convert electrical signals into sound waves.
Loudspeakers are essential for applications such as music editing,video conferencing, watching movies. DefinitionHardware devices which all data to be entered into a computer. COMMON MISTAKE: It's not always something that is plugged in to a computer ( a memory stick isn't an input device. Examples |