Learning about computers
Parts of computer
This view is called the desktop, which makes sense. To avoid this, either set a moving screensaver, which will trigger after a set amount of time, or simply turn the monitor off Printer[ edit ] If you have a printer attached to your computer you can print your information and keep a physical copy of data. They are commonly used as an accessory for a laptop - a small size makes them easier to travel with. The number will appear on the screen. For example, the iMac series of Apple computers have the internals and monitor housed in one case, with only the keyboard and mouse separate. This can not only be highly annoying, but in some cases, make it so the monitor needs to be replaced. You don't want to get it home and find out you still need a separate fax machine or scanner that you thought was included! All mice have at least one button, with the most common layout having three. It is designed so that users can type all the letters of the alphabet without moving their hands. You scroll by using the following methods: Click the squares with the arrow icons. Assembly language is converted into object code via an assembler. Linux is open source, which means that anyone can change the code around and redistribute it as they want, resulting in many different versions. Each motherboard has a fixed number of slots for RAM - often 2 or 4 slots. Our free tutorials go under the hood to explain what these parts are and what they do.
There are a wide variety of subjects covered in these short courses — arts; sciences; and social sciences — useful to either follow an interest or as a foundation for future study.
Two button mice: The second most common layout, more common in older computers, which has a button on the left and right, usually for the index and middle finger.
It is in the lower left corner of the screen. This also works on other things such as word processors.
Notepad now takes up most of the screen. The keyboard has keys that, when pressed, send information to the computer.
Learn about computer hardware
There will be some questions that show up on the screen. You don't have to open anything yet but you may if you want. If you drag it all the way to the bottom of the screen, the task bar vanishes except for its sizing border, which you can drag upward again to bring back the task bar. I was 12 years old and the envy of many of my friends who would all come over so play games as there was enough computer for everyone. If it feels awkward, small, big, long, or short, look for something better! Many programs from word processors to media players utilize the keyboard. Click the middle square. Ports - An introduction to common computer ports such as USB.
You will see a rectangular box that says "Untitled - Notepad". Thus an ordinary programmer would not expect to ever have to deal with it.
Learn about computer hardware
Machine language - All computers and electronic devices communicate in binary , which is a series of 0's and 1's or Off and On electrical signals. I loved that system so much and it was a great teacher in trouble shooting computer problems. This allows information held in memory to quickly interact with the CPU. Time to get busy. F1 is usually assigned as a "help" key, which will open a help dialog when pressed. DVD: Capable of storing 4. Most of the time, programs will let you undo numerous times. RF keyboards and mice need a receiver plugged into the computer, the transmitter is usually built into the keyboard or mouse. Our free tutorials go under the hood to explain what these parts are and what they do. This is called "dragging". To go backwards, press Shift-Tab. For example, the lowercase letter "a" has an ASCII code decimal value of 97, which is in binary.
Each motherboard has a fixed number of slots for RAM - often 2 or 4 slots. Booting for the first time[ edit ] Turn on the computer as described above. RF keyboards and mice need a receiver plugged into the computer, the transmitter is usually built into the keyboard or mouse.
How to become a computer expert
If you left click hereafter simply referred to as "click" it with your mouse, you will open a menu which contains links to almost everything in your computer the first time you ever start Windows XP, the Start menu will automatically be displayed. It creates an environment where the user can interact with the computer in an efficient manner. That means also that it's the same thing as Ctrl-x, Ctrl-c, and Ctrl-v, respectively. RAM is referred to as "volatile" memory because the information stored in it disappears when the power is turned off. Programming tools[ edit ] Programming tools are software in the form of programs or applications that software developers also known as programmers, coders, hackers or software engineers use to create, debug, maintain i. Many computers already have more than 2 Terabytes, and within decades Petabytes thousands of Terabytes and even exobytes Thousands of Petabytes will not be unheard of. Click and hold the scroll bar and drag it. Using this scroll bar, one can go up or down through the text or whatever needs scrolling. This is how the mouse tells where it is, with the laser measuring the distance it crosses when it is moved, and the ball measuring how it rotates. It is generally advised that you use a QWERTY keyboard, as even though Dvorak users gain significantly faster typing speeds, the rarity of the layout makes it hard for people who use Dvorak to use most other computers. The Wordpad window is the active window.
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