CTB Flashcards
What does CTB mean?
Computers The Beginning
What does CPU mean? What does it do?
Central Processing Unit
A CPU carries out the instructions of a computer program by performing a basic arithmetic, logic, control and input.
What does HDD mean? What does it do?
Hard Drive Disc
The HDD stores the long term memories. Whatever data an important files needs to be kept, it will go into the HDD.
What does RAM mean? What does it do?
Random Access Memory
The RAM has a short term memory value. RAM is the most common type of memory found in computers and other sort of devices like a printer.. This stores most of the data from your computer.
What does MoBo mean? What does it do?
MotherBoard
The MoBo holds together many of the crucial components of a computer, including the central processing unit (CPU), memory and connectors for input and output devices.
What does peripherals mean? Give 2 examples.
Peripherals are items that connect to a computer. Something that inputs into a computer is like a mouse, keyboard, mic etc. But a printer or a monitor outputs from a computer.
A printer. It is an item that outputs from a computer because it’s sending data out onto paper.
A keyboard. It is an item that inputs into a computer because when you type in the letters, it is immediately sending the information into the computer.
What is the Fetch Execute Cycle?
A Fetch execute cycle is the basic operational process of a computer. It is the process of a computer that retrieves a program instruction from its memory/data, determines what actions the instruction dictates, and carries out those actions.
What does a Function Machine do? Give 1 example.
A function machine has an input, process and output. The input section allows it to give instructions to the computer. The process section is something that adds the data you type into the computer. The output section is like the conclusion, it is the final result. My function machine is an adding machine.
Input Process Output
2, 4, 6 —–> ADD 2 + 4 + 6 —–> = 12
What does a Bit mean? What is the size?
A Bit is what goes into a byte ( 8 bits ).
The size is a single binary unit.
What does a Nibble mean? What is the size?
A Nibble is rarely used.
The size is 4 bits.
What does a Byte mean? What is the size?
A Byte is the smallest instruction length in a computer.
The size is 8 bits / 2 nibbles.
What does a Kilobyte (kB) mean? What is the size?
A Kilobyte is small text files.
The size is 1024 bytes.
What does a Megabyte (MB) mean? What is the size?
A Megabyte is mp3 files ( music files ), mobile app sizes.
The size is 1024 kilobytes.
What does a Gigabyte (GB) mean? What is the size?
A Gigabyte is hard drives, DVDs, PC computer games.
The size is 1024 megabytes.
What does a Terabyte (TB) mean? What is the size?
A Terabyte is large hard drives.
The size is 1024 gigabytes.
What does a Petabyte (PB) mean? What is the size?
A Petabyte is server farms ( where google / amazon / Facebook store all their data )
The size is 1024 terabytes
How many bytes is 5 kB?
5120 bytes.
What are the advantages of having / using a mobile phone?
- You can socialize with your friends and family.
- It can be very helpful when you are lost, a GPS is very useful.
- Emergency calls.
- Save a lot of memories in it.
What are the risks of having / using a mobile phone?
- Sometimes you get very addicted to phones and you can get into an accident while driving.
- Cell phones can create a radio frequency energy (radio waves) from their antennas, which could cause cancer to the human body.
- Some games might be inappropriate for some age groups.
- It can distract you if you are doing work.
What are the advantages of having / using social network?
- You can socialise with friends.
- If you have any problems you can contact someone.
- Talk to old friends overseas.
- Work issues.
What are the risks of having / using social network?
- Some people might cyberbully.
- People can hack you.
- You can get very addicted to talk to people on phones.
- You might use it so much that you don’t realise the people around you.
