74LS138 - 3 to 8 Decoder De-Multiplexer IC [C] RF Modules Atmega16a Applications:

Atmega16a Applications:

Low cost and Reliable

The Rain Drop Sensor Module can be powered with +5V and has both digital and analog output pins

but can operate independently

Angle of View= 67ᵒ

74LS138 - 3 to 8 Decoder De-Multiplexer IC [C] RF Modules Atmega16a Applications:The 74LS138 is a 3: 8 Decoder IC that is commonly used in decoding or de multiplexing circuits for memory decoding or data routing purposes. It is designed for high speed operations and has three enable pins to make it easier to cascade with other ICs. The device decodes 1 of 8 lines, set by x3 binary select inputs & three enable inputs. The LS138 can be used as an 8 output demultiplexer by using one active LOW Enable input as data input & the other