Computing Flashcards
Define addressable memory
Each main memory location has a main memory address - a unique numerical code that distinguishes the individual parts of memory.
What are the three components of the Three Box Model?
Memory, Processor and I/O ports connected by a bus
What is the Von Neumman architecture?
All the data is stored in main memory, and are sent and received by a processor.
What is a microcontroller?
A complete computer on a single chip
What is an example of a microprocessor?
MP3 player
What is a homepage?
The starting page of a website; it will have links to other pages on the site
What is HTML?
Hypertext Markup Language is use to write web pages. It consists of text that defines the content of a page, and how that page should be structured.
Hyperlink?
A link from one web page to another
Define a web browser
Software that displays a web page by rendering the HTML elements
Define a web site
A set of linked documents associated with a person, organisation or topic that is held on a computer system, accessed via the World Wide Web.
Define hardware
Electronic circuits that a computer is assembled from, and the platform from which software is executed.
What is the Harvard architecture
Processor, main memory and data memory
Define a memory location
A separately addressable area of main memory
Define RAM
Random Access Memory, volatile main memory locations that can be accessed directly in any order for all writing and reading operations
Define main memory
Memory that is directly addressable by the processor
Define the stored program concept
A program must be in main memory to be executed.
Define an I/O port
Allows the CPU to communicate with peripherals
Define an I/O device
A hardware unit that sends or receives data or stores data by communicating with the processor and main memory through an I/O controller
Define peripherals
A computer device that is not part of the CPU
Define EEPROM
Electrically erasable programmable read-only memory; it’s contents may be altered but writing is about 100 times slower than reading.
Define machine code instructions
A binary code that a machine can understand and execute
Define op-code
The part of a machine code instruction that denotes the basic machine code operation
Define operand
The part of a machine code instruction that represents a single item of binary data or the address of a single item of binary data.
Define a register
A very fast memory location inside the processor or I/O controller