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Category : Software Engineering
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- Update : 2013-04-20
- Size : 445kb
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- Author ：孟****
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Introduction - If you have any usage issues, please Google them yourself
First, the base portion (70 ) to design a simple calculator, it has the following expression: 1. Sum of two unsigned 8-bit binary number subtraction of two unsigned 8-bit binary number values and operators with 44 keyboard input, the input value is decimal, where A is the+ B for " -" C " backspace" E " =" Numerical digital tube In addition, for example, when the initial display of " 0" , the first input is addend input digital sequence is from left to right is displayed in decimal form. For example, enter 1, 2 and 3 on the display should be displayed on the " 123" digital display " 0" , the input operator, press the operator key, and then enter the addend, methods, and as before, and finally press under the " =" , digital display the result of the operation, expansion portion (30 ) increase in the base part multiplication function, the multiplication of two unsigned 4-bit binary number, D is the " *" (
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