Desktop Pc Buying Guide
The first thing to consider when buying a computer is what type of activities you
want to do with your laptop or desktop and then you will easily find computer with your requirement. These days computers shapes, features and even sizes are constantly changing. So, read this computer buying guide that would be extremely handy for you.
Buying a Computer:
Software Requirements: Power, speed and memory are the three critical requirements of a computer. Each computer requires differing amounts of these three requirements to go with the software used by the computer.
Memory: Memory of the system is indicated by bytes in the metric system. Therefore, a kilobyte is 1000 bytes, while a megabyte is 1000 kilobytes and a Gigabyte is 1000 megabytes, and so on.
Speed: The speed of the processor or the CPU is measured in Hertz or cycles per second. Similar to the memory, the metric system is used to define the speed of the system.
Processor: The CPU or the central processing unit runs every computer and is a computer chip where commands are given and calculations are processed.
Multicore: There can be multiple cores in a processor. Each of these cores act as a separate processor in consonance with each other.
Speed in Multicore Processor: The speed of each individual core in a multicore processor is measured as Gigahertz (GHz) ratings.
System memory: System memory is essential for any computer to run its program. It is measured in bytes and is called RAM (random access memory). In case one wants to know how much space is available in the computer, one can check the RAM.
Hard Drive: For storing software and other files in your computer, the hard disk drive is used. The amount of hard disk drive you require depends entirely on the number of photos, videos, or music files you want to store.
External Drives: In case one desires to back up data or transfer it to another device (say a Laptop) then one can use these external drives to connect to the computer using a cable connection.
SSD: Sometimes one might store data in Solid State Drives (SSD) also called flash drives instead of the spinning hard disc. This is an increasingly popular phenomenon of late as it provides you convenience of moving a large amount of data in a very small tool which can be carried around easily.
Optical Drive: Todays computers also come with a facility to read CDs or DVDs. In this
Computer Buying Guide we also discussed about computer optical drives. This is possible due to the optical drive. Different computers have different drive speeds which are indicated by ?. A speed rating of 16? for a DVD-ROM may be required to read certain programs. In case you are wondering what ROM stands forit stands for Read Only memory.
External Ports: Connection of a computer to other devices is possible through external ports. Of course, the connections used by the existing devices have to be compatible with the external ports of the computer.
Network Interfaces: In case there is a local area network (LAN) or high speed internet where a connection needs to be made, one can do so using a network interface controller (NIC).
Signal Types: Classification of wireless signals such as 802.11a, 802.11b, 802.11g, and 802.11n make it easy for the buyer to decide the laptop to purchase.
Wireless Routers: In case one wants to set up a network at home with ones laptop, then a wireless router is very much required.
by: iqra shehzad
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