


The cathode ray tube can be said to be a vacuum tube which contains one or more electric guns. This tube produces images when an electron beam strikes a phosphorescent surface. This tube produces pictures as a form of video signals. The entertainment device, which the cathode ray tube was eventually used for since it produces pictures, is a television set.
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Answer:HUMAN RESOURCES AND PROCEDURE COMPONENTS
Explanation: Information systems are known to contain five components, these components help to describe the various aspects and importance of Information systems.
They Include The DATABASE AND DATA WAREHOUSE components(act as the store for all data), The COMPUTER HARDWARE(the physical components of the information systems such as computer harddrive etc)
THE COMPUTER SOFTWARE( the software which includes all the non physical and intangible assets of the information system),
THE HUMAN RESOURCES AND PROCEDURES COMPONENT( which gives instructions to the users).
THE TELECOMMUNICATIONS.
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