First generationcomputers were characterized by the fact that operating instructions weremade-to-order for the specific task for which the computer was to be used. Eachcomputer had a different binary-coded program called a machine language thattold it how to operate. This made the computer difficult to program and limitedits versatility and speed. Other distinctive features of first generationcomputers were the use of (responsiblefor their breathtaking size) and magnetic drums for data storage.


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