74LS266A semiconductor manufactured by Sylvania, listed as 74LS266A (circa 1979).

74LS08A semiconductor manufactured by Sylvania, listed as 74LS08A (circa 1979).

74LS05A semiconductor manufactured by Sylvania, listed as 74LS05A (circa 1979).

74LS253B semiconductor manufactured by Sylvania, listed as 74LS253B (circa 1979).

74LS04A semiconductor manufactured by Sylvania, listed as 74LS04A (circa 1979).

74LS03A semiconductor manufactured by Sylvania, listed as 74LS03A (circa 1979).

74LS02A semiconductor manufactured by Sylvania, listed as 74LS02A (circa 1979).

74LS221B semiconductor manufactured by Sylvania, listed as 74LS221B (circa 1979).

74LS00N semiconductor manufactured by Sylvania, listed as 74LS00N (circa 1979).

74LS00A semiconductor manufactured by Sylvania, listed as 74LS00A (circa 1979).

74LS195B semiconductor manufactured by Sylvania, listed as 74LS195B (circa 1979).

74L03 semiconductor manufactured by Sylvania, listed as 74L03 (circa 1979).

74LS195 semiconductor manufactured by Sylvania, listed as 74LS195 (circa 1979).

74LS193B semiconductor manufactured by Sylvania, listed as 74LS193B (circa 1979).

74LS191B semiconductor manufactured by Sylvania, listed as 74LS191B (circa 1979).

74LS175B semiconductor manufactured by Sylvania, listed as 74LS175B (circa 1979).

74LS174B semiconductor manufactured by Sylvania, listed as 74LS174B (circa 1979).

74LS164A semiconductor manufactured by Sylvania, listed as 74LS164A (circa 1979).

74LS163B semiconductor manufactured by Sylvania, listed as 74LS163B (circa 1979).

74LS163 semiconductor manufactured by Sylvania, listed as 74LS163 (circa 1979).