Section overview - The Following session will go through basic computer concepts.
What is IT?
IT refers to the retrieving, processing, transmission, protection and management of information using software and hardware.
What is a computer?
A computer is an electronic device that receives input from a user, processes the information and provides a relevant output.
Pro's and Con's:
- High Productivity
- Accurate and high precision
- simplifying tasks
- Can get work done in hazardous environments
- Store large amounts of data.
- usually high initial costs.
- Regular maintenance and checkups needed.
- If the product line changes, reprogramming of systems would be needed.
- In case of a breakdown, whole production line can be halted.
- Sometimes on the spot logical decision making is needed from a trained professional
Different types of computers:
Main-frame computers:
- handle large amount of data
- Has high throughput for simultaneous processes
- High level of security
- Redundant components for reliability
- Strictly backwards compatible for older software
Personal Computers:
- PC(personal computer) can fit onto a desk. It was the first computer that could be used as a home computer.
Notebook:
- Portable and much smaller version of the computer that runs on a battery. This version is also not as upgradeable, configureable and less power consuming than a PC.
