00330nam a22001217a 450000500170000000800410001708200190005810000200007724500470009726400320014430000090017665000230018520251108172411.0250721s1987    xx            000 0 eng d14a621.381737/WOO1 awoollard, barry10adigital interated circuits and compters / 1 alondon :bhill book,c1987.  a196p17adigital integrated