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The word software is also sometimes used in a more narrow sense, meaning application software only. At the lowest level, executable code consists of machine language instructions specific to an individual processor âtypically a central processing unit (CPU).
At the heart of the computer is a machine that processes digital data consisting of ones and zeros. The firstcomputers were made in the 1940âs. They were large, room-sized objects that were difficultto program. Todayâs computers are much smaller and have a wide variety of software programs that they can run. Basic Computer Hardware and Software. ACMP Â©2006-2008 UAF Geophysical Institute A-2 Basic Computer Hardware and Software Hardware The term âhardwareâ refers to the physical parts of a computer system.