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=Radioshack Electronics Learning Lab Collaborative Lab Reports=

Group Members' Names: Ruchi, Christina, Myra

Group Name: The RCM

Write in third person in all cases as well as in complete sentences.

Template for entry (Copy the template below exactly!)

Name of Circuit
- Function of the circuit:

- Components used in the circuit (listing with basic definitions):

- Explanation of difficulties encountered while creating the circuit:

- Multimedia (Images, Interviews, Videos- make sure to title and number them)

=**Simple LED Flasher**=

- Function of the circuit: The function of the circuit was to make the LED flash.

- Components used in the circuit (listing with basic definitions): -3 resistors - integrated circuit - LED, -capacitor - 2 white wires -1 red wire
 * Yellow - Violet - Red
 * Brown - Black - Orange
 * Brown - Black - Red

Integrated Circuit- Integrated circuits are microscopic electronic circuits etched on a sliver of silicon called a "chip" and installed in a plastic, metal, or ceramic package with external leads or pins.

LED- A Light Emitting Diode

Diode- A device, as a two-element electron tube or a semiconductor, through which current can pass freely in only one direction.

Capacitor- Capacitors store an electrical charge. Capacitors smooth a fluctuating signal. They block continuous current while passing current pulses. Capacitors in series with resistors are used in circuits that measure time or generate a series of pulses.

Resistor- Resistors resist the flow of electricity. This makes them very useful for reducing current to LEDs, which can be damaged by too much current. Resistors are also used to divide a voltage into a smaller voltage.

- Explanation of difficulties encountered while creating the circuit: The first time the circuit was made, the LED shined but didn't flash because the 555 integrated circuit was upside down. Also, the components were sometimes put inside the wrong pips.

- Multimedia (Images, Interviews, Videos- make sure to title and number them):

Picture 1: Inside a Light Emitting Diode (LED) "How light Emitting Diodes work." __How Stuff Works__. © 1998-2008 HowStuffWorks, Inc. . 18 Feb 2008 <[|http://static.howstuffworks.com/gif/led>.] Picture 2: The Simple LED Flasher circuit media type="custom" key="540119" Video 2: Interview with Myra and Ruchi

=555 Black Box Circuit= A "Black Box" circuit is one that's there when you need it. You can use it even if you don't know how it works. This black box test circuit produces a tone with a frequency controlled by a resistor and a capacitor.

Function of the circuit: The function of the circuit was to make a buzzer beep.

Components used in the circuit: -Integrated Circuit -3 resistors -Capacitor -3 white wires -4 red wires -4 blue wires
 * Brown - Black - Orange
 * Brown - Black - Red
 * Brown - Black - Brown

Integrated Circuit- Integrated circuits are microscopic electronic circuits etched on a sliver of silicon called a "chip" and installed in a plastic, metal, or ceramic package with external leads or pins.

Capacitor- Capacitors store an electrical charge. Capacitors smooth a fluctuating signal. They block continuous current while passing current pulses. Capacitors in series with resistors are used in circuits that measure time or generate a series of pulses.

Resistor- Resistors resist the flow of electricity. This makes them very useful for reducing current to LEDs, which can be damaged by too much current. Resistors are also used to divide a voltage into a smaller voltage.

Explanation of difficulties encountered while creating the circuit: For this circuit, there were no difficulties, as the group got the circuit to work the first time it was made.

Image 3: 555 Black Box Circuit media type="custom" key="527777" Video 1: Interview with Christina

4017 Decade Counter: Build the Incredible Music Machine
Function of the circuit: The circuit is a programmable sequential tone generator that can sound like a chirping bird, a siren, and many other sounds.

Components used in the circuit: -Integrated Circuit -3 resistors -Tan capacitor (ceramic) -Blue capacitor (hydrolitical)
 * Brown-Black-Red
 * (All three of them are Brown-Black-Red)

Integrated Circuit- Integrated circuits are microscopic electronic circuits etched on a sliver of silicon called a "chip" and installed in a plastic, metal, or ceramic package with external leads or pins.

Capacitor- Capacitors store an electrical charge. Capacitors smooth a fluctuating signal. They block continuous current while passing current pulses. Capacitors in series with resistors are used in circuits that measure time or generate a series of pulses.

Resistor- Resistors resist the flow of electricity. This makes them very useful for reducing current to LEDs, which can be damaged by too much current. Resistors are also used to divide a big amount voltage into a smaller amount of voltage.

Explanation of difficulties- The main difficulty we had was that the capacitors were put in the wrong way. This is why the circuit did not work.

media type="custom" key="543615" Video 3: Interview with Christina

Picture 4: Incredible Music Machine