nulabkit - Massachusetts Institute of Technology Department...

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Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science 6.111 -- Introductory Digital Systems Laboratory NUBUS LABORATORY KIT For your pleasure and convenience, we have provided a portable, self-contained laboratory kit for each and every 6.111 student. This kit contains everything you will need to build that digital circuit you've always dreamed of. Breadboarding Modules: There are six proto strip modules for mounting integrated circuits and other components. Each group of five (or four) contacts (running left to right) is internally bussed together, and every group is independent from every other. The contacts on all proto strips accept leads from 0.015'' (AWG 26) to 0.032'' (AWG 20). However, they work best with AWG 22 wire; smaller diameter wires have a tendency to fall out. The spring loaded contacts may be damaged if you attempt to insert wire of larger diameter, so don't do it . Do NOT attempt to use wire larger than AWG 20. If you need to use a component with a larger wire, then solder a short piece of AWG 22 wire to it. Help is available at the Instrument Room desk. The left hand proto strip is specifically designed for analog circuits. Immediately to its left is a distribution strip for +12 volts and -12 volts. Immediately to its right is a distribution strip for GND and +5 volts ANALOG . There is a separate AC power switch for these analog power supplies. Normally, when not using this proto strip, you should leave this AC power switch OFF . Immediately to the right of the right hand five proto strips is a distribution strip for GND and +5 volts (DIGITAL). Note that the +5 volts (DIGITAL) and the +5 volts (ANALOG) are NOT connected. Do NOT connect these two +5 volt power supplies together. All power supply busses run vertically down the side of each strip. Integrated circuits are installed on the center of a strip, leaving three or four contacts for each IC pin. Note that two of the five proto strips are narrower than the other three. Please keep this in mind when planning the location of ICs. Jumper wires, cut to the desired length from # 22 wire, are installed whenever needed. 3/8" of insulation should be stripped away from the wire for insertion into a contact. Resistors, capacitors, and diodes may be placed where needed. When inserting components, especially integrated circuits, be careful not to break the pins. The pins of new integrated circuits will usually be fanned out slightly, making insertion difficult.
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Bend the pins carefully to make them perpendicular to the body of the IC by pressing the IC against a table top so that the IC fits easily in place. There are three proto strips labeled with the ``3M'' logo. The two vertical ones are bussed together on the printed circuit board and also connected to three connectors at the lower right and to two larger connectors at the right hand side of the kit. The signals on these two ``3M'' strips are identical EXCEPT for the top three connections. Labels on the pc
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nulabkit - Massachusetts Institute of Technology Department...

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