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Digital Electronics: Principles and Applications, Sixth Edition Student Web Site

Chapter Resources
Chapter 10 - Arithmetic Circuits

Chapter Overview
The public's imagination has been captured by computers and modern-day calculators, probably because these machines perform arithmetic tasks with such fantastic speed and accuracy. This chapter deals with some logic circuits that can add and subtract. (Of course, the adding and subtracting is done in binary.)

Regular logic gates will be wired together to form adders and subtractors. Basic adder and subtractor circuits are combinational logic circuits, but they are commonly used with various latches and registers to hold data.

In the central processing unit (CPU) of a computer, arithmetic is handled in a section commonly called the arithmetic-logic unit (ALU). This section within the CPU can usually add and subtract, multiply and divide, complement, compare, shift and rotate, increment and decrement, and perform logic operations such as AND, OR, and XOR.

Many older microprocessors and several modern microcontrollers (a miniature microprocessor used mainly for control purposes) do not have multiply and divide commands in their instruction set.

Practice Tests
Chapter Test

EWB (Electronics Workbench) Files
EWB textbook files for this chapter.
EWB experiments manual files for all chapters.

Save the files above to your computer's desktop. Find the file, double-click it and unzip to a convenient location. You will need Electronics Workbench®, version 5 to use the files.

Chapter Assignments
Extend your learning with additional assignments.

Internet Connection
Chapter Links
www.calculator.com
www.howstuffworks.com

 

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