SN74LS40
DUAL 4-INPUT NAND BUFFER (Motorola)
SN74LS42
ONE-OF-TEN DECODER (Motorola)
SN74LS42
1-of-10 Decoder (ON Semiconductor)
SN74LS42
4-LINE BCD TO 10-LINE DECIMAL DECODERS (Texas Instruments)
SN74LS422
Retriggerable Monostable Multivibrator (Texas Instruments)
SN74LS423
Retriggerable Monostable Multivibrator (Texas Instruments)
SN74LS451
Dual 8:1 Mux (Monolithic Memories)
SN74LS461A
8 Bit Counter (Monolithic)
SN74LS47
BCD TO 7-SEGMENT DECODER/DRIVER (Motorola)
SN74LS47
BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS (Texas Instruments)