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=Radioshack Electronics Learning Lab Collaborative Lab Reports=

Group Members' Names: David, Alex

Group Name:

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)

Seven-Segment Decoder-Driver
- Function of the circuit: To be able to convert binary to decimal numerals and to display numbers on the LED digital display.

- Components used in the circuit (listing with basic definitions): Integrated circuit-A integrated a small chip on a piece of silicon in which the components are interconnected to perform a certain function. Resistor-The resistors reduces the flow of electricity or current. LED digital display-A LED digital display displays numbers and sometimes words when you push a button. Push button switch-The push button switch acts as a switch to help start and stop current.

- Explanation of difficulties encountered while creating the circuit: Making sure that the long integrated circuit was flipped the right way and using the small white wires to connect long distances. Other difficulties were the trouble shooting, trying to find the one wire was missing so that the circuit would work right. The wires kept popping out of the right places and so it was hard to trace them back to the right hole.

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

Picture 1. David with Breadboard

media type="custom" key="539903"Video 1. Interview of Seven Segment Decoder Picture 2: Wiring of the Seven Segment Decoder

Cook, David. "HIGH-LEVEL PROJECT SCHEMATIC." __The Robot Room__. 2/27/2008. David Cook. 27 Feb 2008 .



Picture 10: Alex's building of the circuit

555 "Black Box" Circuit
- Function of the circuit: To make a buzzer buzz continuously.

- Components used in the circuit (listing with basic definitions): -Integrated circuit: A integrated a small chip on a piece of silicon in which the components are interconnected to perform a certain function. -Resistors: The resistors resist the flow of electricity or current in the current. -Buzzer: A buzzer is a signaling device and produces a load tone. -Capacitor: A capacitor stores electric charge and then releases it into the load to make it activate.

- Explanation of difficulties encountered while creating the circuit: Some difficulties encountered when creating this circuit was putting each wire in the correct spring and having it stay put. Another difficulty was troubleshooting it when the circuit did not function properly the first time. After troubleshooting it the problem was that the capacitor was not fully plugged into the breadboard.

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

Picture 3. 555 Box Circuit Picture

media type="custom" key="539807" Video 2. 555 Box Circuit Interview

LED Flasher
- Function of the circuit: To make a LED flash on and off repeatedly.

- Components used in the circuit (listing with basic definitions): LED- A LED is a semiconductor that has a small light source. Integrated Circuit-A integrated a small chip on a piece of silicon in which the components are interconnected to perform a certain function. Resistor- The resistors reduce the flow of electricity or current. Capacitor- A capacitor stores electric charge and then releases it into the load to make it activate.

- Explanation of difficulties encountered while creating the circuit: The difficulties in creating this circuit were finding the anode and cathodes of the LED, finding the certain hole that the wire was suppose to go into, and looking through the magnifying glass to find the right resistor. These are very common difficulties because almost every circuit requires these components. To solve the difficulty of finding the anode and cathode of the LED one must just try each side out till the circuit works. To find the certain hole that the wire was supposed to go in, it is sometimes necessary to bend wires so the breadboard is more accessible.

- Multimedia (Images, Interviews, Videos- make sure to title and number them) media type="custom" key="525185" Video 3. LED Flasher Interview

Picture 4. Photo of LED flasher circuit

Pictures of Components:


"History of Electronic devices." __uobkupartnership__. uobkupartnership. 27 Feb 2008 <[|http://www.uobkupartnership.talktalk.net/med%20integ3.jpg>.

Picture 5: Picture of Integrated circuit

Harris, Tom. "how LEDs work." __How stuff works__. how stuff works. 27 Feb 2008 <[|http://static.howstuffworks.com/gif/led-diagram.jpg>.]

Picture 6: Picture of the inside of a LED



"Resistor and Capacitor tables." __MDS975__. arar93. 27 Feb 2008 <[|http://www.arar93.dsl.pipex.com/mds975/Images/radios/resistors01.jpg>.]

Picture 7: Different types of resistors

"Catalog." __OpAmp Electronics__. OpAmp Electronics. 27 Feb 2008 <[|http://www.opamp-electronics.com/~opamp/catalog/images/100uF_16V_Radial_Electrolytic_Capacitor_003054-5.gif>.]

Picture 8: A close up of the capacitor



Picture 9: components of a push button switch

"Basic Car Audio Electronics." __Switches__. 2/27/2008. Car Audio. 27 Feb 2008 <[|http://www.bcae1.com/switches.htm>.]