Microsoft Word - Digital Logic Design v_4_6a

What is the voltage at the output (vo) when the switch is Opened and closed in the following
circuit:

Solution:

1 k Ω

Vcc

Gnd

Output,

Vo

1 M Ω

Switch Open

I

I

1 k Ω

Vcc

Gnd

Output,

Vo

1 M Ω

Switch Closed

I

I 2 = 0

I = V/R = 5 / (1001 x 10^3 )

I ≈ 5 x 10 -6 A

Vo = 0 + 10^6 x5 x 10-6 == 5v

Vo=0

“The output is directly Connected to

Ground or 0 v”

1 k Ω

Vcc

Gnd

Output

1 M Ω