4. Write a program that counts from 0 to 9, increasing the value once per second. If you wish, you can make use a switch statement like the following. This updates the value of boolean variables based on the value of counter. If counter == 0, the first line executes, if counter == 1 then second line executes etc. boolean A, B, C, D, E, F, G; switch (counter) { case 0: A=0; B=0; C=0; D=0; E=0; F=0; G=1;break; case 1: A=1; B=0; C=0; D=1; E=1; F=1; G=1; break; default: A=0; B=0; C=1; D=0; E=0; F=1; G=0; break; } There is a lot to keep track of when programming the seven segment display - you have to know which panel is lit up by which pin on the display, as well as which pin from the Arduino is connected to which pin on the display. This can make your program quite messy and quickly get out of hand if not handled properly. Using defined constants is valuable to keep many pins to track: // represents that pin 9 out of Arduino activates pin A on the display. const int PIN_A = 9;
Operations
In mathematics and computer science, an operation is an event that is carried out to satisfy a given task. Basic operations of a computer system are input, processing, output, storage, and control.
Basic Operators
An operator is a symbol that indicates an operation to be performed. We are familiar with operators in mathematics; operators used in computer programming are—in many ways—similar to mathematical operators.
Division Operator
We all learnt about division—and the division operator—in school. You probably know of both these symbols as representing division:
Modulus Operator
Modulus can be represented either as (mod or modulo) in computing operation. Modulus comes under arithmetic operations. Any number or variable which produces absolute value is modulus functionality. Magnitude of any function is totally changed by modulo operator as it changes even negative value to positive.
Operators
In the realm of programming, operators refer to the symbols that perform some function. They are tasked with instructing the compiler on the type of action that needs to be performed on the values passed as operands. Operators can be used in mathematical formulas and equations. In programming languages like Python, C, and Java, a variety of operators are defined.
Arduino UNO Coding
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