List all parts of a computer
Computer:
Monitor:
Display.
Previously we used cathode ray tube.
Now we are using lcd technology.
LCD:
Used to display much thinner.
Cathode ray tube:
Contains one or more electron gun and a phosphorescent screen and used to display images.
Electron gun:
Device producing a less breadth of electrons from a heated cathode.
Phosphorescent screen:
Light emitted after exposure to radiation.
Who is father of computer?
Charles Babbage.
Mouse:
Small handheld device moved across flat to move cursor on computer screen.
Who invented mouse?
Douglas engelbart.
Keyboard:
Panel of keys that operate a computer.
Housing:
Describe any material or casing that helps to protect or connect components.
Mother board:
It is same as PCB.
Each component is directly connected to PCB.
If you using intel processing you need an Intel-compatible motherboard.
Processor:
Brain of computer.
What are primary functions of processor?
Fetch.
Decode.
Execute.
Write back.
What are basic elements of Processor?
ALU.
FPU.
Register.
L1 and L2 cache.
ALU:
Perform arithmetic and logical operations.
What are Arithmetic operation?
Addition, subtraction, multiplication and division.
What are Logical operation?
NOT, AND, OR.
How the information is stored?
0 and 1.
How many transistor are required to store data?
1 for NOT gate.
Multiple transistors for other gates.
AND gate:
OR gate:
Monitor:
Display.
Previously we used cathode ray tube.
Now we are using lcd technology.
LCD:
Used to display much thinner.
Cathode ray tube:
Contains one or more electron gun and a phosphorescent screen and used to display images.
Electron gun:
Device producing a less breadth of electrons from a heated cathode.
Phosphorescent screen:
Light emitted after exposure to radiation.
Who is father of computer?
Charles Babbage.
Mouse:
Small handheld device moved across flat to move cursor on computer screen.
Who invented mouse?
Douglas engelbart.
Keyboard:
Panel of keys that operate a computer.
Housing:
Describe any material or casing that helps to protect or connect components.
Mother board:
It is same as PCB.
Each component is directly connected to PCB.
If you using intel processing you need an Intel-compatible motherboard.
Processor:
Brain of computer.
Fetch.
Decode.
Execute.
Write back.
What are basic elements of Processor?
ALU.
FPU.
Register.
L1 and L2 cache.
ALU:
Perform arithmetic and logical operations.
What are Arithmetic operation?
Addition, subtraction, multiplication and division.
What are Logical operation?
NOT, AND, OR.
How the information is stored?
0 and 1.
How many transistor are required to store data?
1 for NOT gate.
Multiple transistors for other gates.
AND gate:
OR gate:
NOT gate:
XOR gate:
Control unit:
Tells memory, ALU input and output devices on how to respond a program's instruction.
FPU(floating point unit):
Designed to carry out operations on floating point no's.
What are the operations of FPU?
Addition, subtraction, multiplication, division, shifting and bit shifting.
Bit shifting:
Bits in binary value are moved by no of places either left or right.
Register:
Small set of data holding place.
Cache:
To store information temporarily.
L1 cache:
Primary cache.
Fastest cache.
Small size and a smaller delay.
SRAM is used.
L2 cache:
Secondary cache.
Accessed only when data is not found in L1.
DRAM.
What is the difference between L1 and L2 cache?
L1 has smaller memory capacity than L2.
L1 accessed fastly than L2.
L1 has little delay compared to L2.
Where SRAM is used?
Continue to have data bits in memory as long as power.
Where DRAM is used?
Store bits in capacitor and transistor.
Loses data when power is removed.
Why DRAM is slower than SRAM?
Each bit is basically a single transistor capacitor and physical design captalizes on that fact.
What are the different types of Processor?
Intel.
Advanced micro devices lead market in terms of speed and quality.
What are Intel's desktop CPU?
Celeron.
Pentium.
Core.
What are AMD's desktop CPU?
Sempron.
Athlon.
Phenom.
What is fastest processor on market?
Xeon CPU.
I7.
Hard drive:
Used magnetic storage to store and retrieve digital information.
How to measure hard drive capacity?
Mega bytes.
What does Hard drive do?
Storage.
Everything you store it will be on hard drive.
Disadvantage of Hard drive:
Hard drive is damaged all data will be lost.
That's why people have back up system.
How big a hard drive is need?
Based on transmission of file.
You want to transfer small files between computers you need 500 gb.
Transfer large files you need 1 TB.
What are the different types of hard drive connections?
USB.
Fire wire.
SATA.
ESATA.
USB:
Universal serial bus.
Able to read and save files almost instantly.
Fire wire:
Faster in transferring video files.
SATA:
Serial AT attachment.
Highest file transfer speed of any format.
ESATA:
Connection for external storage device.
How important is hard drive speed?
More quickly your computer can find the file you want.
External hard drive:
High storage capacities and are often use to back up computers.
Internal hard drive:
Pre-installed software applications the OS and other files.
Display Adapter:
Generates images that appear on systems visual display unit.
Graphic card or video card.
RAM:
Random access memory.
Data in RAM will remain as long as running.
Optical drive:
Read and write data.
Connect directly to PCB.