Comments on: How computers work (in terms of electricity and voltage)? http://www.fatebistro.com/how-computers-work-in-terms-of-electricity-and-voltage.php The world of computers at your fingertips Sun, 15 Aug 2010 17:58:49 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: David F http://www.fatebistro.com/how-computers-work-in-terms-of-electricity-and-voltage.php/comment-page-1#comment-162 David F Sun, 12 Apr 2009 19:10:02 +0000 http://www.fatebistro.com/how-computers-work-in-terms-of-electricity-and-voltage.php#comment-162 Time to look up boolean logic, logic gates, followed by FPGA, and then CPU. Once you understand binary numbering, the next step is binary logic. Transistors are wired together to make logic gates, which basically take one or more bits (binary digits) and produce an output. Logic gates are how a computer can make decisions. For example, a gate called and looks at two (or more) input bits, and if all bits are 1, the gate (transistor circuit) generates a 1 output. If any input is 0, the output is 0. There's also or and not gates. By combining these 3 gates in different combinations, (including feeding them back into each other), all kinds of circuits can be made: adders, multipliers, flip-flops, memory cells, registers, and even an entire CPU. Time to look up boolean logic, logic gates, followed by FPGA, and then CPU.

Once you understand binary numbering, the next step is binary logic. Transistors are wired together to make logic gates, which basically take one or more bits (binary digits) and produce an output.

Logic gates are how a computer can make decisions.

For example, a gate called and looks at two (or more) input bits, and if all bits are 1, the gate (transistor circuit) generates a 1 output. If any input is 0, the output is 0.

There’s also or and not gates. By combining these 3 gates in different combinations, (including feeding them back into each other), all kinds of circuits can be made: adders, multipliers, flip-flops, memory cells, registers, and even an entire CPU.

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