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O Level Computer Science: Software: Operating Systems: Personal Computers
A personal computer operating system is a software which is initially installed in a personal computer which has a role of controlling the operation of a computer and directing the processing of...
O Level Computer Science: Software: Operating System
An operating system, or “OS,” is software that communicates with the hardware and allows other programs to run. It consists of system software, or the fundamental files your computer...
O Level Computer Science: Hardware: Point Of Sale Terminal
A point-of-sale (POS) terminal is a hardware system for processing payments at retail locations. Software to read magnetic strips of credit and debit cards is embedded in the hardware. It...
O Level Computer Science: Hardware: Automated Teller Machine
An automated teller machine (ATM) is an electronic device that enables customers of financial institutions to perform financial transactions, such as cash withdrawals, deposits, funds transfers,...
O Level Computer Science: Hardware and Software: Introduction
A computer system is made up of two important elements which are hardware and software. A computer is defined as an electronic device capable of accepting data (raw facts and figures)as input,...
AS A Level Business: The Macro-economic And Micro-economic Business Environment
It has been established that businesses do not operate in a vacuum It has also been demonstrated that there is an internal and external environment that affects and is affected by the operations...
AS A Level Business: Going Private
We have already looked at what it means to go public Going private is the opposite of that Going private is when a company goes from being a public limited company whose shares are available for...
AS A Level Business: Going Public
A lot of companies start as private limited countries for various reasons However eventually a lot of companies eventually “go public” Going public-is when a private limited company...
AS A Level Business: Public Sector Businesses
As said in the introduction to business sectors All business can generally be classified as either belonging to the public sector or private sector A sector is simply a group of businesses that...
