A Peek at Computer Electronics: Things You Should Know

A Peek at Computer Electronics: Things You Should Know

Caleb Tennis

Language: English

Pages: 232

ISBN: 2:00028687

Format: PDF / Kindle (mobi) / ePub


Are you a programmer or computer enthusiast? Do you feel comfortable with methods, functions, and variables? Do you wish you knew more about how the computer made it all work? Now you can. From basic electronics to advanced computer hardware, you’ll learn the magic behind the gear that makes it all run.

If you’re into tinkering, or ever thought about it, this book explains the basics of how it all works

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130 132 The Processor 8.1 The history of the processor 8.2 Processor Fundamentals . . 8.3 Processor Packaging . . . . 8.4 Processor Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CONTENTS 9 The Motherboard 9.1 Circuit Connections 9.2 Bus Types . . . . . . 9.3 RAM . . . . . . . . . 9.4 System Clock . . . . 9.5 BIOS . . . . . . . . . 9.6 Other Devices . . . . . . . .

reduced. 53 AC P OWER D ISTRIBUTION Zero Power Figure 3.17: Two phase power waveform So why three phases and not four or more phases? It comes down to cost. The cost of adding yet another wire for the power company to run is significant. The overall cost was higher than any other efficiency gains it might bring to 4-phase motor design. Three phases became a natural settling point. From the station to your house The three phases of power leaving the electrical company’s generators are in

✺✻✼ Q! D flip-flop Figure 7.15: D Flip-Flop 122 T RANSISTOR CIRCUITS ✽ Q ✿❀✾ ✾ _ Q JK flip-flop _ Q J K HOLD 0 0 SET 0 1 0 1 RESET 1 0 1 0 TOGGLE 1 1 Q clock pulse No Change Change to opposite state Figure 7.16: JK Flip-Flop input, CLK. It has the same Q and Qbar outputs as the RS flip-flop does. The JK flip-flop is a clocked flip-flop, which means that its outputs will only change when the clock (CLK) is triggered. This generally happens during the transition

large number of traces are seen in the figure. • Vias - One problem with traces on a printed circuit board is that they are purely two dimension. There is no way to jump a trace over another one. This presents a problem when there get to be a large number of traces—how do you connect up components where the traces need to jump over each other? The answer is with vias. Vias are small holes that have been drilled in the board. A small copper ring lines the hole, and runs through the board all the

their power consumption to heat instead of light. The new trend in light bulb design seems to be moving to compact fluorescent designs which are more energy efficient, requiring only about 25% of 37 AC VERSUS DC the energy as a similar incandescent bulb to generate the same amount of light. Edison vs. Tesla Using Faraday’s principles of electromagnetic induction, Edison created a generator capable of producing DC, or direct current. One of Edison’s employees, Nikola Tesla, a Croatian born

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