Tech Concepts and Terminology for Tech+

Computing Basics

All computers perform a fundamental information processing cycle consisting of four stages: Input, Processing, Output, and Storage. - Input: The computer accepts data from the outside world via input devices.

Notational Systems

Modern computing uses different notational systems (numeral systems) to represent values. The decimal system (base-10) is the standard for everyday counting, using ten digits 0 through 9.

Units of Measure

Computing involves various units of measure for data and speed: - Bit (b): The smallest unit of digital information, representing a 0 or 1. Network speeds are measured in bits per second (bps). 8 bits = 1 byte.

Troubleshooting Methodology

IT professionals use a structured troubleshooting methodology. CompTIA defines a six-step process: 1. Identify the problem: Gather information. Ask about error messages, what was happening, recent changes. Determine scope. 2.