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Buying a new Computer?

 

What to look for?

 

There are four basic components that you have to look for in a new computer:

Hard drive,

Memory,

CPU (Central Processing Unit and )

Operating System

 

Hard drive/HDD

 

What is a HDD? Decide on a size and connection interface.

A hard disk drive (HDD), hard disk (sometimes 'disk' is spelled disc) or hard drive, is something used by computers to store information. Hard disks use magnetic recording (similar to the way recording is done on magnetic tapes) to store information on rotating circular platters. The capacity of a hard drive is usually measured in gigabytes (GB). A gigabyte is one thousand megabytes and a megabyte is one million bytes, which means that a gigabyte is one billion bytes. Some hard drives are so large that their capacity is measured in terabytes, (TB) where one terabyte is a thousand gigabytes (1 TB = 1000 GB). Very early Consumer Grade hard drives were measured in Megabytes.

Note: SATA is the most common connecter type and IDE is already deemed outdated

 

Memory/RAM

 

Random access memory (or simply RAM) is the memory or information storage in a computer that is used to store running programs and data for the programs. Data (information) in the RAM can be read and written quickly in any order. Normally, the random access memory is in the form of computer chips. Usually, the contents of RAM are accessible faster than other types of information storage but are lost every time the computer is turned off.

Note: There are many different types of RAM these days but DDR3 is now the most common in new computers although most computers are still using DDR2.      The amount of RAM is very important when making your decision in purchasing a new computer. For Win7 4GB of RAM is more than enough depending on what programs the computer is running.

 

CPU/ Central Processing Unit

 

A central processing unit (CPU) is an important part of almost every computer. The CPU sends signals to control the other parts of the computer, almost like how a brain controls a body. The CPU is an electronic machine that works on a list of things to do, called 'instructions'. It reads the list of instructions, one instruction at a time, and does each one in order. A list of instructions that a CPU can read is a computer program. A machine that can perform the job of a CPU is often called a Turing machine by mathematicians. The speed that a CPU works at is measured in "Hertz", "Hz"; however modern processors run so fast that "Gigahertz", "GHz", is used. One gigahertz is one billion hertz. The CPU market is controlled by two companies, Intel and Advanced Micro Devices (usually shortened to AMD)

Note: The CPU is arguably the most important component to consider when you want a fast and responsive computer. This is what controls every little thing. CPU technology changes daily and it’s worth doing some research on the specific CPU model and brand before you purchase a computer.

 

OS/ Operating System

 

An operating system (also called an OS) is a piece of software that is needed to run the programs on a computer or a mobile device. The programs that run on an operating system talk to the hardware

Note: There are so many different types of operating systems that I can’t list them all. Chances are that you know Windows. Windows is my preferred choice of OS as I have worked on Windows all my life, but there are many other open source operating systems around that you can use to replace Windows with.

 

That’s all there is to it, choose the right four basic components that suits your needs or budget mixed with a couple fancy extra new features and you won’t be disappointed.

For more information give us a call on 082 803 4763 or email us on sales@pcsure.co.za

credits : wikipedia.org

 

 

Basic Keyboard Shortcuts

Shortcut Keys

Description

Alt + E Opens the edit options in the current active program.
F1 Universal Help in most programs.
Ctrl + A Selects all text.
Ctrl + X Cut the selected item/text.
Ctrt + C Copy the selected Item.
Ctrl + V Paste the last item in the clippboard i.e. last copied/cut file/item.
Shift + Del Permanently deletes selected file ( Caution file does not go to recycle bin)
Home Goes to the begining of the line .
Ctrl + Home Goes to the begining of the file.
End

Goes to the end of the line.

Ctrl + End Goes to the end of the program
Winkey + pressing Tab In Win 7 shifts through open programs
Tab Moves to next checkbox or item
Shift + Tab The reverce of Tab, moves upwards to prevois checkbox
Atl + Ctrl + Del

Win7 (Gives options to: change password,task manager, lock pc, logoff)

XP ( Opens the Task Manager)

Ctrl + Shift + Del Opens the Task Manager directly both Win7 & WinXP
Alt + PrintScreen

Only captures a prinscreen of the window that is currently active

(Paste in Paint then save to use or send a print screen)