The Texas instruments TI-83 graphing calculator functions the ability to affix to a personal computer v the usage of a separately purchased connectivity cable. The cable permits programmers to upload applications and other contents onto the device, and program the calculator come perform functions that space not normally obtainable as standard features. Those wanting to conserve money top top peripheral tools can produce their very own TI-83 cable from scratch.
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Insert the 2.5 mm stereo jack right into the calculator"s port. If the plug does no fit flush v the port, remove a small part of steel from around the base of the plug through a steel file.
Set the multimeter come ohms and also determine the voltage of every wire. Probe every ring ~ above the stereo jack tip, climate probe the equivalent wires coming from the jack. Use this info to save track the the wires" place within the cable. Reattach the plastic cover onto the stereotype jack.
Remove the plastic cover from the 2.5 mm stereo jack. Strip away some of the cable top top the jack and also the three-core electrical cable. Solder each wire from the cable to each connector ~ above the jack. Connect the ground wire to the copper mesh top top the stereotype jack.
Place the wires with the connector rings and also place them back into the stereo jack. Reattach the plastic cover onto the stereo jack.
Solder one diode ~ above pins 13 and 3 ~ above the D-type connector. Solder another diode onto pins 12 and also 2.
Solder one end of the 1k ohm resistor top top the foot of the diode at pin 13. Repeat the procedure with an additional 1k ohm resistor with the diode at pen 12.
Strip the three wires in the cable. Solder the ground wire to pen 22 ~ above the D-type connector. Locate the wire that corresponds with the voltage uncovered on the top ring in the stereo jack and also solder it to the resistor connected to pen 13.
Locate the wire with the very same voltage together the middle ring of the stereotype jack and also solder it come the resistor connected to pen 12. Usage the multimeter to locate the exactly wires.
Add insulation in in between the diode and resistor foot to protect against shortages. Connect the plastic cover approximately the D-type connector.
Plug the 2.5 mm stereotype jack right into the receptacle ~ above the TI-83. Insert the D-type connector right into the parallel harbor on her computer. Girlfriend can likewise use an USB-to-parallel connector for better compatibility, if necessary.
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Mark Robinson is a freelance graphic designer and also writer. Since 2008 that has added to assorted online publications, specializing in topics worrying automotive repair, graphics design and also computer technology. Robinson stop a Bachelor of science in graphic style from Alabama A&M University.
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