How to Calculate Resistor Values for Voltage Steps in a Circuit?

[tim345]

Homework Statement

Calculate suitable resistances for R1 to R5 so that the binary values from the
counter produce voltages from 0 V to approximately 3.75 V in approximately 0.25 V
steps at point K in the circuit.I am attaching the document as well.There is total 9 questions which i need help

Homework Equations

Rtotal=1/R1 + 1/R2 +1/R3

The Attempt at a Solution

i have done t identify that the resistors are in parallel and in series but don't know how to start.
Rtotal=1/R1 + 1/R2 +1/R3

 

[berkeman]

Homework Statement

Calculate suitable resistances for R1 to R5 so that the binary values from the
counter produce voltages from 0 V to approximately 3.75 V in approximately 0.25 V
steps at point K in the circuit.I am attaching the document as well.There is total 9 questions which i need help

Homework Equations

Rtotal=1/R1 + 1/R2 +1/R3

The Attempt at a Solution

i have done t identify that the resistors are in parallel and in series but don't know how to start.
Rtotal=1/R1 + 1/R2 +1/R3

https://www.physicsforums.com/attachment.php?attachmentid=38391&d=1314647189

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