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2012-2013 Thank You
Have a Nice Day :) The power supply converts the voltage coming from the wall socket to something closer to the need of the computer.
provides a stable and continuous electrical current to all of the elements that make up the computer.
Laptops are typically powered by an internal rechargeable battery that is charged using an external power supply. 15 w 15-30 w 80-140 w 20-30 w The north bridge handels a group of integrated circuits. The North bridge handles communication between the CPU chip itself and with the memory bus and graphics bus controllers. The South bridge handles communication between
the north bridge and the
peripheral buses. a printed circuit with connectors for expansion cards,
memory modules, the processor, etc. a small battery that provides power to the (CMOS) chip which helps to preserve all system configuration stored at this chip like date and time , even while the computer is turned off. The BIOS can be configured using an interface (BIOS setup),
which can be accessed when the computer is booting just
by pressing a key. a chip that contains instructions & setup for how system should boot and how it operates. The BIOS is stored in ROM (Read Only Memory). a serial port for connecting old peripherals.
a parallel port mainly for connecting old printers.
USB ports for connecting more recent peripherals.
RJ45 connector for connecting the computer to a network.
VGA connector for connecting a monitor (with the built-in graphics card).
Audio plugs for connecting sound speakers or a hi-fi system, as well as a microphone (with the built-in sound card). how many cycles per second the chip operates at?
how many times per second a charge of electricity passes through the chip?
More clock cycles usually means more processing capability and more speed.
how many execution cores are in the chip?
More execution cores means more processing capability, but not necessarily more speed. The Central Processing Unit (CPU) is responsible for interpreting and executing most of the commands from the computer's hardware and software. Popular CPU Manufacturers A modern CPU is usually small and square with many short, rounded, metallic connectors on its underside instead of pins. The CPU attaches directly to a CPU "socket" (or sometimes a "slot") on the motherboard. The CPU is inserted into the socket pin-side-down and a small lever helps to secure the processor.
The processor always has a fan and heat sink. The purpose of this combination is to keep the processor cool enough to operate. The opposite of RAM is serial access memory (SAM). SAM stores data as a series of memory cells that can only be accessed sequentially (like a cassette tape).
Similar to a microprocessor, a memory chip is an integrated circuit (IC) made of millions of transistors and capacitors. a data storage device used for storing and retrieving digital information using rapidly rotating discs (platters) coated with magnetic material.
HDD speed depends on rotational speed of a disk, measured in revolutions per minute (rpm). Windows7 allows you to create a Restore Point, where you can get back to the system whenever something went wrong.
Windows7 allows you to create an image of your OS, keep it in a DVD, and then you can install it directly to other machine by booting the DVD. The image is a copy of your system as it is along with the whole package of programs that is installed. Restore and Backup Before taking the decision to format How can we reserve our data, whenever Windows is not working probably anymore, and the plan which is the last solution is to recover/ format the OS? Remove Hard Disk
Get into Safe Mode