Understanding Computers: Introduction Chapter Quiz

What Is a Computer and What Does It Do?

• A computer is a programmable, electronic device that accepts data, performs operations on that data, and stores the data.
• The primary operations of a computer are:
  • Input: Entering data into the computer
  • Processing: Performing operations on the data
  • Output: Presenting the results
  • Storage: Saving data, programs, or output for future use
  • Communications: Sending or receiving data

IPOS Cycle

• Input: Entering data into the computer
• Processing: Performing operations on the data
• Output: Presenting the results
• Storage: Saving data, programs, or output for future use
• Communications: Sending or receiving data

Data vs. Information

• Data is raw, unorganized facts that can be in the form of text, graphics, audio, or video.
• Information is data that has been processed into a meaningful form.

Hardware

• Hardware is the physical parts of a computer.
• Internal hardware is located inside the main box (system unit) of the computer.
• External hardware is located outside the system unit and connects to the computer via a wired or wireless connection.
• Hardware devices are associated with all five computer operations.

Input, Processing, and Output Devices

• Input devices are used to input data into the computer, such as:
  • Keyboards
  • Mice
  • Scanners
  • Cameras
  • Microphones
  • Pens
  • Touch pads
  • Touch screens
  • Fingerprint readers
• Output devices are used to present the results, such as:
  • Monitors
  • Printers
  • Speakers

Why Learn About Computers and Technology?

• Computers are everywhere and have become an integral part of our lives.
• Computers are used in various aspects of daily life, including business, education, and personal activities.

Computers and Technology Today

• Electronic devices are converging into single units with multiple capabilities.
• Computer literacy is an essential skill for everyone.

Early Personal Computer Use

• Microcomputers (inexpensive personal computers) were invented in the early 1980s.
• The World Wide Web (WWW) and the graphical Web browser were invented in the early 1990s.

Computing Devices in Education

• Most children and teens have used computers all their lives.
• Computer labs and classrooms are common in schools.
• Some schools integrate e-books into the curriculum and supply or require devices.

Computing Devices on the Job

• Computers have become a universal on-the-job tool.
• Computers are used for decision-making, productivity, and communications.
• Computers are used by service professionals, the military, and many other industries.

Computing Devices on the Go

• Computers are encountered in nearly every aspect of daily life.
• Examples include:
  • ATM transactions
  • POS systems at retail stores
  • Portable computers
  • Smartphones and smart watches
  • GPS systems