Information Technology (IT)
What is IT?
Hardware
Motherboard
RAM
CPU
GPU
Cooling Fan
Heat Sink
Hard drive
Power Supply
3v Battery
Optical drive
Peripherals
Keyboard
Monitor
Mouse
Printer
Scanner
The Basics of Computers
- Hardware
- Operating System
- Applications
Hardware is the physical parts of a computer that you can touch and hold while the operating system is what controls the hardware and enables you to tell what the computer to do. Applications (or software) are what allows for specialized tasks to be done on a computer such as typing a document or playing a game.
Inputs/Outputs
Inputs are the commands that the user makes for the computer to process, and output. Some input devices are a mouse and a keyboard. The user moves the mouse cursor and the computer processes the movement outputting onto the monitor and with the keyboard the user types in commands that the computer processes and outputs onto the monitor.
Maintaining Computers
Upgrading Computers
Another upgrade that should be made is the OS (operating system) as this increases your security and also patches problems in the previous OS. Doing this comes with many risks such as compatibility issues so you must check that your computer can handle the upgrade. After this upgrade external upgrades might be needed as you might want different ports or maybe more of them. Know that upgrading is made only to fix problems!
Wired Networking
Wireless Networking
In wireless networks there are 2 "modes" which are ad hoc and infrastructure mode.
Ad hoc is basically is peer to peer mode where you can directly share printers or files with other ones. This is manly used for small and temporary networks.
Infrastructure mode is for large and non temporary networks and use one or more WAP (wireless application protocol) which allows you to use the internet, telephone...etc. The most common infrastructure which is wi-fi. Technology is always improving and wi-fi is too from 802.11.a version to 802.11n.
Green Networking
- Green Space
- Green Servers
- Green workers.
First of all green space involves setting up server rooms so they can cool easily like using the hot and cool aisle method where one aisle is with servers and then a column that is cool. Also buying energy efficient equipment (energy star) can help greatly safe electricity.
Green servers save electricity and can be done by turning off servers when not in use to using low power servers. Another thing is using visualization. This is basically creating virtual computers so one machine can accomplish the tasks of many computers. Having multiple computers results in more drainage of power so having one machine do all tasks can greatly save electricity over time.
Green workers means saving the electricity and space by allowing telecommuting, voice over IP and cloud computing so many can work at different places than just the office saving the companies loads of money.
Servers/Clients
There are 2 types of computers in a network which is servers and clients. Servers basically share things like files, folders and even printers while clients pretty much accesses those shared things. One thing great about networks are that a PC can be both server, client or even both! There different of clients known which are fat and thing clients. A fat client has most resources installed locally while thin client doesn't. The plus side for thin clients are that they take less power which can save electricity and money.
Jobs/certificates
The areas in this are project management such as IT skills for office productivity, software architecture, service/help desk, database administration, network administration, security, networking and training, programming...etc
One of the areas that I want to be in is the programming field as it always seemed fun to create things like websites, games out of code. For this I do need to know coding languages like C++ or being platform-oriented such as Microsoft which stress visual studio.