Tutor and Freelance Writer. Science Teacher and Lover of Essays. Article last reviewed: 2019 | St. Rosemary Institution © 2010-2020 | Creative Commons 4.0

The American Voting System: Electoral College

The American voting system elects legislators based on one geographical district; by majority or plurality (whoever gets the most votes in that district wins). The districts are whole states for Senators and parts of states for House members. This is known as the “First-past-the-post” system. In the parliamentary system, all legislators are elected at-large, meaning…

Slavery in the Early Settlements

The Origins of the Minority Groups in America Native Americans –       As the settlers took over the land, the Natives went through back- breaking work done on farms –       Conquistadors forced Natives to work for a tax –       Slave-like existence –       Working conditions in gold and silver mines were unsanitary, dark, cave-like –       Diseases spread:…

ASCII: American Standard Code for Information Interchange

Recall: Computers communicate using binary Therefore, computers do NOT process information using characters (e.g. letters). Each letter or character has a number representation that the computer uses to refer to the character. ASCII: American Standard Code for Information Interchange ASCII is a code for representing English characters as numbers. The ASCII numbers range from 0…

Computer Communication Channels and Cables

Definition In a network, a communication channel is the physical path the transmission signals travel. It is the path information travels from computer to computer. How do the computers in a network “connect” to each other. The 5 communication channels twisted pair cables coaxial cables fibre optic cables terrestrial stations communication satellites Twisted pair cables…

Computer Software and Types

Software is the programs, routines, and symbolic languages that control the functioning of the hardware and direct its operation. Types of Software Retail Software type of software is sold off the shelves of retail stores. includes expensive marketing and packaging designed to catch the eye of shoppers generally more expensive OEM Original Equipment Manufacturer designed…

Types of Computers & Parts

Hardware vs. Software Hardware is the physical equipment directly involved in the performance of data-processing or communications functions. Software is the programs, routines, and symbolic languages that control the functioning of the hardware and direct its operation. Definition of a computer A computer is a programmable machine that stores, retrieves, and processes information A Personal…

The Development of Computing 1951 – 2001

First Generation Computers 1951 – 1959 • Vacuum tube logic. • Magnetic drum or tape storage. • Punched cards used for data inputs. • Programmed in machine language. •  Large, slow and expensive. Second Generation Computers 1959 – 1963 • Discrete transistors replace vacuum tubes. • Magnetic core used for main memory. • Magnetic disk…