Character encoding methods

Published May 09, 2018

Character encoding methods

Character encoding methods arose with the appearance of a computer, when the task of representing non-numeric values in binary code began. For the encoding of symbols, a method was proposed that was later widely used for sounds and images. The set of input and display symbols is called the alphabet of the computer system. These are Arabic numerals, letters of the Latin alphabet, punctuation...

Number systems

Published May 09, 2018

Number systems

Number systems are sets of methods for writing and naming numbers, which are written using symbols, by the number of which the number systems are divided into positional and non-position ones. Non-positional numbers use an infinite set of symbols. For example, the Roman numeral system in which the letter I is used to write the number...

Representing numbers in computer memory

Published May 09, 2018

Representing numbers in computer memory

A specific feature is the representation of numbers in the computer's memory, where they must be located in the smallest addressable memory cells - bytes, each of which can contain an arbitrary code of eight binary digits. In turn, numbers can be whole exact, fractional exact, rational, irrational, fractional approximate, can be positive and negative...

Data structures

Published May 09, 2018

Data structures

When data is ordered, working with large amounts of data is easier to automate. To do this, use data structures, among which you can select the following: linear (lists), tabular, hierarchical (tree). Linear data structures (or lists) are ordered structures in which the address of a given is uniquely determined by its number (index). An example is the list of the training group...

Simple logical operations

Published May 09, 2018

Simple logical operations

A very important applied value for computer science is simple logical operations, used in the development of program algorithms. Simple logical operations are used when talking about statements - narrative sentences about which they can be said to be true (denoted by 0) or false (denoted by 1) (the third is not given)...

Device for presenting information

Published May 09, 2018

Device for presenting information

What is the principle of the device for presenting information, intended for its transformation or storage? The principle of such devices changed with the development of technology. The first were mechanical devices with manual, and then with a steam drive, electromechanical, electrical devices and, finally, electronic devices...

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