Hardware & Communication
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Control unit (CU) | is used to manage the execution of instructions
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| Arithmetic and logic unit (ALU) | is used to process and manipulate data
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| Address | identifies where the data is being sent and retrieved.
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| Data bus | is a wire which carries data between computer components.
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| Address bus | is a wire which carries information of where data is to be sent.
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| Control bus | carries signals from control unit
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| Bus | is used to connect the different parts of a computer together. It is used to carry data or addresses to the different parts of a computer.
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| Bit | is a single digit in a Binary number e.g. 0 or 1.
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| Byte | a group of eight bits e.g. 00011001
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| Word | the group of bits that can be manipulated as a single unit by the CPU. A computer using a larger word size would generally operate faster (usually 16
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| Register | A register is used as a fast access temporary data store used for a specific purpose
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| ROM (Read Only Memory) | is permanent and cannot be deleted or amended. ROM is non-volatile which means that when the computer is turned off the contents of ROM are maintained.
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| Applications of ROM | is used for example to store the bootstrap program that starts the computer.
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| RAM (Random Access Memory) | Data can be added
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| Ram Cache memory | is a part of the main store between the CPU and the rest of the memory. Using cache memory can greatly reduce processing time.
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| Disc Cache | section of memory for holding data temporarily that has been read from disc.
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| Hard Disk Properties | Capacity varies from 20GB to 2TB. Found inside computer. Speed of access: fast/direct.Reasonably cheap.
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| Handshaking | the exchange of signals between devices to establish their readiness to communicate.
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| Analogue | is a continuous varying signal and digital consists of discrete patterns.
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| Why is Analogue to digital conversion required? | will be required because voice is analogue and computers only accept digital input and would therefore need converting to digital.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
mcounsell
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