Unit 1 IGCSE CS

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Across
  1. 3. Hypertext Markup Language. Used to specify the elements of a web page to allow them to be presented in a certain way.
  2. 4. Eight bits of binary data.
  3. 5. Data that provides information about other data.
  4. 6. set A system for representing letters, numbers, and symbols in binary, with each represented by a binary sequence.
  5. 8. address Media Access Control address. An address given to a network interface controller. Used to uniquely identify devices on a local area network.
  6. 9. The smallest addressable part of a bitmap image that corresponds to a single colour.
  7. 10. code Program instructions that require no further translation.
  8. 11. language The first computer language invented. Uses short text words instead of binary number codes which makes it easier for human programmers to write and understand.
  9. 12. A number system that uses ten distinct symbols (the numbers 0–9) to represent a number. Also called decimal or base-10.
  10. 15. Storage location within the processor.
  11. 16. A group of 4 Bits
  12. 17. One gigabyte is one billion bytes (10, to the power 9 ,10^9 ). The symbol for the gigabyte is GB. See also gibibyte.
  13. 18. An encoding format that allocates a numeric code to characters in order for them to be represented in binary within a computer system. Unicode covers the characters for most known alphabets and special symbols (e.g. mathematical operators, geometric shapes, arrows, emojis, etc.).
  14. 20. A sequence of characters, e.g. letters, numbers, spaces, and other symbols.
Down
  1. 1. One kilobyte is 1, comma, 000,1,000 bytes (10, cubed,10^3). The symbol for the kilobyte is kB. See also kibibyte.
  2. 2. A binary digit. The basic unit of data within a computer system that has the value 0 or 1.
  3. 3. A number system that uses 16 distinct symbols (the numbers 0-9 and the letters A-F) to represent a number. Also called hex or base-16.
  4. 7. !0^12 Byte
  5. 8. One megabyte is 1, comma, 000, comma, 000,1,000,000 bytes (10, to the power 6 ,10^6). The symbol for the megabyte is MB. See also mebibyte.
  6. 13. American Standard Code for Information Interchange. An encoding format that allocates a numeric code to characters (e.g. digits, letters, punctuation marks, etc.) in order for them to be represented in binary within a computer system.
  7. 14. The process of finding and correcting errors in program code.
  8. 19. depth The number of bits used to represent a colour. Also known as bit depth.