computer fundamentals

• A supercomputer is used for scientific research and simulations that require high processing power.
• a computer system is a complete installation of Hardwares, software, users, procedures and data.
• In its simplest form a computer is an electronic device capable of executing a set of instructions
• Super computers are designed to carry out complex computing tasks using maximum computing power.
• Data centers hold mainframes.
• TikTok stores its user's data in mainframes at their data centers in Singapore.
• Mainframes is a large scale powerful computer with a large capacity of memory(storage) and a fast CPU.
• Desktop system is a computer system small enough to fit on a desk but also powerful enough for common business tasks and inexpensive enough for home ownership.
• A general-purpose computer system is a computer system suitable for undertaking a wide range of common computing tasks.
• Mobile devices are computing devices that are small enough to hold and operate in one's hand and are easily portable.
• A special purpose computer is a computer system which performs a small range of tasks and are uniquely designed for use in a particular industry.
• An embedded device is a special purpose computer that carries out a specific function within a larger electrical system.
• Embedded devices include all elements of a computer system but on a small and simple level.
• The quality of information produced will depend on the quality of the source data.
• system software is the category of software that manages the computer system and provides the basic services required by the user.
• The two types of system software are comprised of: operating system & application system.
• There are 6 roles of the operating system and they are:

  • User interface
  • security management
  • file management
  • resource management
  • memory management
  • process management
• A system utility is a specialized program that assists in maintaining the efficiency of the computer system, example: back up & antivirus.
• disk clean up clears the disk of unnecessary files.
• disk fragmenter organizes files on the disk to make it easier to access.