The CPU is the brain of the computer and carries out program instructions. Common CPU speeds are 3.1 GHz for desktops and 2.1 GHz for laptops, with faster CPUs producing more heat. Memory in a computer includes RAM for editable data storage, ROM for non-editable data, flash memory for electrical erasing/reprogramming, DRAM and SDRAM for faster data storage in capacitors, and EPROM for retaining data when powered off. A computer also contains adapter cards like PCI and PCIe for external communication, an NIC for network connectivity, an HDD for data storage using ribbon cables, and input/output devices like keyboards, monitors, printers and speakers. Internal cables include SATA, SC

1. INTERNAL
COMPONENTS
OF A COMPUTER
Benn Kelly

2. CPU
The CPU (Central processing unit) is
basically the brain of the computer,
it carry's out the instructions of a
computer program to preform the
operations of a system. The CPU is
measured in bits and the average
speed of a computer CPU is usually
3.1 Ghz and a laptop is 2.1 Ghz.
The faster the CPU the more heat
will be produced which means a
larger fan is needed.

3. Memory
RAM ROM
Random Access Memory, Read only memory,
is were data is stored cannot be edited.
and can be edited.
Flash Memory
Flash memory can be electrically
erased and re-programmed.

4. Memory
DRAM SDRAM
Dynamic random-access Synchronous DRAM is a much
memory, the difference faster version of DRAM,
between DRAM and RAM is running at 180MHz, depending
that DRAM stores each bit of on your processor.
data in a different capacitor.

5. Memory
EPROM DRAM
Erasable Programmable Read Only Dynamic Random Access
Memory, this is a memory chip Memory, this stores every bit of
that contains data when the data in many different capacitors
computer is turned off. on the chip.

6. ADAPTER CARDS
PCI PCIe
Peripheral Component Peripheral Component
Interconnect, it allows Interconnect express, this is a
communication with an computer expansion card.
external card.
NIC
Network Interface Controller,
the connects the computer to
computer network.

7. HDD
Hard Disk Drive, this is for
storing and retrieving digital
information. A HDD can be
portioned into four different
parts and can be labeled
primary and secondary. The
HDD is connected to the
motherboard using a Ribbon
cable.

8. INPUT AND OUTPUT DEVICES
-Keyboard is and input
used to type on the
computer.
-Monitor is a input device.
-Printers are an output
device.
-Speakers are an output
device projecting sound.
-Touch screen is an input
device.

9. Internal Cables
SATA SCSI
High transfer speeds and are It transfers data between
hot swappable, 7 pin computers and peripheral
connector. devices.
PATA
Use bi-directional
channels for data, 40 pin
connector.

10. Inside of a computer