Knowra Digital Revolution Digital Revolution The shift from analog and mechanical technologies to digital computing, communications, and information systems, beginning in the mid-20th century. It transformed how information is created, processed, stored, and shared.
Binary number system : A positional numeral system that represents values using only 0 and 1. Binary encoding made text, images, sound, and instructions processable by the same machines.
ENIAC : An early electronic general-purpose computer completed in 1945 at the University of Pennsylvania. ENIAC showed that electronic machines could perform complex calculations at unprecedented speed.
Personal computer : A general-purpose computer designed for use by one person at a time. Personal computers moved computing from institutions into homes, schools, and offices.
Information society : A society in which producing, processing, and distributing information are central economic and cultural activities. The shift made information work and infrastructure defining features of modern economies.
Analog signal : A signal whose value varies continuously to represent information. Digital systems replaced continuous signal representation with discrete values that tolerate copying and processing.
Transistor : An electronic component that switches or amplifies electrical signals. Transistors replaced bulky vacuum tubes and enabled smaller, more reliable digital circuits.
Claude Shannon : An American mathematician and engineer whose work founded modern information theory. His mathematical account of information helped make digital communication a precise engineering discipline.
Mobile phone : A portable telephone that communicates through a cellular radio network. Digital cellular networks made computing and communication increasingly portable.
Automation : The use of technology to perform tasks with reduced direct human control. Programmable systems automated work once carried out by clerks, operators, and industrial workers.
Analog computer : A computer that represents quantities through continuously varying physical properties. Analog machines solved problems through physical measurement rather than binary instruction processing.
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