Coding is when data is saved into a shortened version. An advantage of coding is that it takes up less memory when storing in the computer because it is in an shortened form. A disadvantage od coding is that you can not understand what is it about if you do not have the code.
A2) The binary numeral system is a numeral system that represents numeric values using two symbols, usually 0 and 1. The binary system is used internally by all modern computers. A way of encoding text is by using ASCII to represent each character as a binary number.
Any type of data being entered into a computer is always stored and processed using binary numbers. Computer memory is measured in 'bytes'. One byte is made up of eight bits, and each byte can store one character, For example: (Each letter is one byte. So each binary unit digit is one bit) A = 01100001 B = 01100010 C = 01100011
Binary numbers are the main form of data in which all computers use for communication and processing. Such data is also used in various ICT devices such as scanners and bar code readers in supermarkets.
These binary numbers are seem by the computer or ICT device as digits of "0" or "1". An example of a binary 'code' would be: 10001101110
A1) Coding makes it easier to search the data, to make comparisons and to identify any patterns that require further investigation. An advantage of coding is that data can be found fast and easily due to the fact that all the data is coded. A disadvantage is that only the person who has coded the data can identify it.
Remember that data is plural (the singular is datum), so if you are asked for an example in an examination, you could quote 23, 45, 67, 98, 78, but not just 23. These data strings do not have any meaning on their own, but they can be input to a computer system to be processed into information
Outcomes
The different types of data that can be input into an ICT system
The concept of input, process and output and being able to give examples that relate to ICT
Examples of information in relation to the use of ICT systems
The fact that data is plural and input into ICT systems
The difference between coding and encoding
The factors that affect the value of information
Information - What it is and what forms it can take
Data - What it is and what forms it can take
Key Terms
Coding: Some data is coded on collection before being entered and this changes the original data into a shortened version by assigning a code
Encoding: Used by computers to convert the data into machine readable form
5 comments:
Coding is when data is saved into a shortened version. An advantage of coding is that it takes up less memory when storing in the computer because it is in an shortened form. A disadvantage od coding is that you can not understand what is it about if you do not have the code.
A2) The binary numeral system is a numeral system that represents numeric values using two symbols, usually 0 and 1. The binary system is used internally by all modern computers.
A way of encoding text is by using ASCII to represent each character as a binary number.
Q) What are binary numbers?
Any type of data being entered into a computer is always stored and processed using binary numbers.
Computer memory is measured in 'bytes'.
One byte is made up of eight bits, and each byte can store one character,
For example:
(Each letter is one byte. So each binary unit digit is one bit)
A = 01100001
B = 01100010
C = 01100011
Binary Numbers -
Binary numbers are the main form of data in which all computers use for communication and processing. Such data is also used in various ICT devices such as scanners and bar code readers in supermarkets.
These binary numbers are seem by the computer or ICT device as digits of "0" or "1". An example of a binary 'code' would be: 10001101110
A1) Coding makes it easier to search the data, to make comparisons and to identify any patterns that require further investigation.
An advantage of coding is that data can be found fast and easily due to the fact that all the data is coded.
A disadvantage is that only the person who has coded the data can identify it.
Post a Comment