-
Perforated cards
The punched card or simply card is a sheet made of cardboard containing information in the form of perforations according to a binary code. These were the first means used to enter information and instructions to a computer in the 1960s and 1970s.
Punch cards were first used around 1725 by Basile Bouchon and Jean-Baptiste Falcon as a more robust form of the perforated paper rolls used at the time to control textile looms in France. https://youtu.be/YXE6HjN8heg -
Digital Computers
Digital computer, any of a class of devices capable of solving problems by processing information in discrete form. It operates on data, including magnitudes, letters, and symbols, that are expressed in binary code—i.e., using only the two digits 0 and 1. By counting, comparing, and manipulating these digits or their combinations according to a set of instructions held in its memory. https://youtu.be/SWlTNR8S998 -
Analog Computers
An analog computer or analogue computer is a type of computer that uses the continuously changeable aspects of physical phenomena such as electrical, mechanical, or hydraulic quantities to model the problem being solved. In contrast, digital computers represent varying quantities symbolically, as their numerical values change. -
Network Computers
Computer networking as we know it today may be said to have gotten its start with the Arpanet development in the late 1960s and early 1970s. Prior to that time there were computer vendor “networks” designed primarily to connect terminals and remote job entry stations to a mainframe. But the notion of networking between computers viewing each other as equal peers to achieve “resource sharing” was fundamental to the arpanet design. https://youtu.be/N5GBcmB74Ow