# Labs

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## The Voltage Divider Circuit and LED Current Limiting

Ohm’s Law Ohm’s Law is a mathematical relationship between the current flowing through, voltage supplied to, and the resistance of an electric circuit given by, V=IR where V is voltage in volts (V), I is current in amperes (A), and R is resistance in ohms (Ω). Using the analog/digital trainer, build the following circuit using

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## Using the 74HC595 Shift Register for More Digital Inputs/Outputs

The ATmega328 used on the Arduino Uno has 14 digital input/output pins (two are used for serial communication). What if you need more than 14 digital inputs/outputs? One solution is to use an 8-bit shift register like the 74HC595 integrated circuit. This chip has 8 output pins that can be set to high or low

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## Introduction to Binary, Hexadecimal, and Data Types

All Your Bases are Belong to Us (Tee Hee :)) Our number system is based on ten digits, 0 through 9, which are used to represent all numbers. This system is referred to as the base-ten or decimal numeral system. Numbers that are larger than 9 are represented with two or more digits, each occupying