Determine the eight output levels in Figure 8–12 given the following inputs:

Question

David · Accepted Answer

(a) 
Draw the circuit for 74138 octal decoder with labeled inputs.
Determine the eight possible output levels in Figure 1. 
The decoder is enabled only when 1 0E   , 2 0E   and 3 1E   because the inputs 1E  , 2E and 3E are 
connected to three input AND gate internally. 
From figure 1,

Determine the eight output levels in Figure 8–12 given the following inputs:

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