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Online Test Application

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Abstract / Introduction
As already known that a calculator is a device that is used for making mathematical calculations such as adding, subtracting, multiply, divide, and find percentage etc. A hardware based calculator is an electronic device with a keyboard and a LCD display that can find basic mathematical calculation. You are required to design a digital calculator that can take 3 digits input from a keyboard and can perform basic arithmetic operations on two inputted variables and display result on LCD interface.
Functional Requirements
• 3-digit input (single variable)
• Subtract
• Multiply
• Divide
• Percentage
• LCD Interface
• Microcontrollers (Intel 8051/8052 series)
• C/C++ Programming Language
• Assembly Language
• Circuit Designing Software (Orcad Pspice, WorkBench)
• Keil Embedded Development Kit
• Microcontroller Burner Kit
• Circuit Components (Resistors, Capacitors, oscillators etc.)
• Wireless interface devices (ZigBee etc.)


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