00457nam a22001457a 4500003000400000005001700004008004100021020001900062082001800081100001900099245011300118260003100231300002000262700002900282OSt20250825104540.0250825b        |||||||| |||| 00| 0 eng d  a97899389691481  a621.381bP18T  aPakmer, James   aSchaum's outline of theory and problems of introduction to digital systemcBy James Palmer And David Perlman  aChennaibMcgraw hillc2020  avii, 395p. bPB  aPerlman, David eAuthor