The 74LS181 4-Bit Arithmetic Logic Unit has been chosen as the second example. The functional specifications of the 74LS181 can be found in any TTL data book. Since the same procedures are used for this example as the 74LS165 example described in the last section, no details will be included here. The reader is encouraged to download the files and try to setup the test with the equipment. All the files for the 74LS181 example are available in the Useful Files section of the web page. The same VEE program used in the 74LS165 example can be used for this example.
