Examlex
Roentgenography, named for the German physicist who discovered it, is better known today as:
Pascaline
An early mechanical calculator invented by Blaise Pascal in the 17th century, capable of performing addition and subtraction.
Main Memory
The primary storage area in a computer where data and programs that are in active use are stored; also known as RAM (Random Access Memory).
Central Processing Unit
The primary component of a computer that performs most of the processing inside a computer, executing instructions from programs.
Operating System
The software that manages hardware resources and provides common services for computer programs, acting as an intermediary between users and the computer hardware.
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