00384cam a2200169   450000500170000024501240001702000050014110000190014604400050016525000050017004100080017530000050018350000050018883000050019326000090019808200070020720260711133828.0  aTTL Cookbook: a complete guide to the understaing and using of Transistor-Tranasistor Logic (TTL) integrated circuitsb  a  aLancaster, Don  a  a  aspa  a  a  v  abc  ab