00554cam a2200193 7i4500 0000000556 20080924090000.0 19980818142400.0 060518 0333259815 TK7868.D5 C39 1979 Catt Digital hardware design Ivor Catt, David Walton and Malcolm Davidson. London: MacMillan Press Ltd., 1979. 95p.: ill. Digital electronics Walton, David. Davidson, Malcolm 0000001031 Book Open Shelf HQ Library