Computer Basics CIS 113-01 Bladen Community College August 21, 2009
OBJECTIVES In basic terms, define the word computer . Discuss various ways computers can be categorized. Identify six types of computers designed for individual use. Explain the importance of computers in today’s society. Describe how computers are used in various sectors of our society.
What is a Computer? A computer is an electronic device that processes data, converting it into information that is useful to people. A computer is controlled by programmed instructions, which give the machine a purpose and tell it what to do. Earliest computers were analog systems. Today we have digital computers.
How Can Computers Be Categorized? Some computers are designed to be used by one person, groups of people, or by no people at all. Can be categorized by their power (speed at which they operate and the types of tasks they can handle) Can also be subcategorized by price, types of hardware they contain, and software they run on.
Desktop Computers The most common personal computer Designed to sit on (or under) a desk or table Can be found in schools, homes, and offices Desktop computers can be used for learning, work, and play
Workstations Single-user computer that has more power and features than a standard desktop PC. Are popular among scientists, engineers, and animators They often have large, high-resolution monitors and accelerated graphics-handling capabilities
Notebook Computers Are called laptops They are lightweight Portable Can operate on alternating current or special batteries
Handheld PCs Small enough to fit in your hand The most popular handheld is the PDA (Personal Digital Assistant) Is used for taking notes, displaying telephone numbers and addresses, and keeping track of dates or agendas. Can be used to access the Internet
Smart Phones Cellular phones that offer advanced features Web and e-mail access Special software such as personal organizers Special hardware such as digital cameras or music players. Some break in half to reveal a miniature keyboard
Why Are Computers Important? Computers are important because they store and process information that is important and essential to our lives.
Why Are Computers Important? (cont.) Home Communications (e-mail)*** Business work done at home Schoolwork Entertainment Finances Schools Computer skills are being taught to students at a young age Computers are being incorporated into student’s daily work assignments
Why Are Computers Important? (cont.) Small Business Enables small businesses to operate more efficiently by allowing workers to do a wider variety of tasks Industry Design Shipping Process Control
Why Are Computers Important? (cont.) Government Population Taxes Military Police Health Care Managing schedules Handling billing Making patient diagnoses Performing complex surgery
Lets Review What is a computer? Explain a few of the different ways in which computers can be categorized. List six types of computers that are designed for use by a single user. What is the most popular use for home computers? How are computer technologies used by the military? How are computer technologies being used to train surgeons.