Earning Ways 4U

 Computer memory is of two basic types – Primary memory(RAM and ROM) and Secondary memory (hard drive, CD, etc). Random Access Memory (RAM) is primary-volatile memory and Read-Only Memory (ROM) is primary-non-volatile memory Types of Primary Memory By Haider Technical Home » Software Development » Software Development Tutorials » Computer Tutorial » Types of Primary Memory Types of Primary Memory Introduction to Primary Memory The primary memory of a computer can be categorized into three major types. viz., a. Main memory that holds instructions and data of the current program, b. Cache memory that enhances the performance of CPU by holding a copy of instructions/data stored in the main memory to save unwanted retrieval, c. Register memory that holds information required by arithmetic and logical unit of CPU to execute the instructions. While Cache memory and Register memory are embedded as part of the CPU, the main memory is an independent unit in a computer connected to CPU by a ...

  A mouse is a small hardware input device used by hand. It controls the movement of the cursor on the computer screen and allows users to move and select folders, text, files, and icons on a computer. It is an object, which needs to put on a hard-flat surface to use. When the users move the mouse, the cursor moves in the same direction on the display screen. The name mouse is derived from its size as it is a small, corded, and elliptical shape device that looks a bit like a mouse. A connecting wire of a mouse is imaginable to be the mouse's tail. Additionally, some of the mice have combined features like extra buttons, which may be assigned and programmed with many commands. The mouse invention is considered as one of the most important breakthroughs in the computer field as it helps to reduce the use of a keyboard Different buttons on a computer mouse This resource will explain the functions of different buttons on Windows and Apple computer mice. Windows mouse The Left Button Th...

 There's no single standard dictating the number of keys, buttons, or characters on a keyboard; most companies use the PC keyboard with a total of 104 alphanumeric keys as a de facto standard. There have been many different manufacturers over the years, so the number of keys varies from model to model. On this page, we list the key counts for many of the more common types of keyboards in their respective classes. IBM/PC keyboards Original IBM PC Keyboard (1981) - 83 keys Updated IBM PC Keyboard (1984) - 84 keys AT Keyboard - 84 keys AT Enhanced Keyboard - 101 keys US Traditional Keyboard - 101 keys Enhanced European Keyboard - 102 keys Windows Keyboard - 104 keys Windows-based Laptop Keyboard - 86 keys Windows-based multimedia Keyboard - varies by how many special keys are present Apple keyboards Apple Keyboard with Numeric Keypad - 109 keys Apple Wireless Keyboard - 78 keys Apple MacBook Air laptop - 78 keys Miscellaneous keyboards Other keyboard configurations may include more th...

 Computer  The history of computers began with the primitives designs in the early 19th century and went on the change the world during the 20th century During 1801 to 1900 1801: joseph Marie jacquard ,a French merchant and inventor invents a loom that uses punched wooden cards to automatically weave fabiric designs .Early computers would use similar punch cards . 1821: English mathematics Charles Babbage  conceives of a steam-driven calculating machine that would be able to compute tables of numbers. Funded by the British government, the project, called the "Difference Engine" fails due to the lack of technology at the time, according to the University of Minnesota 1848: Ada Lovelace , an English mathematician and the daughter of poet lord  Byron, writes the world's first computer program. According to Anna Siffert, a professor of theoretical mathematics at the University of Münster in Germany, Lovelace writes the first program while translating a paper on Babbage's...