computer architecture 7A BCD encoder could be used to displa

computer architecture

7.A BCD encoder could be used to display ootal numbers: tind a Function to detect an error in the represent digit in BCD (i.e, an equation with valu any one of the unused bit combinations octal numbers never ntation of an octal atlon of an OctaL an equation with value 1 when inputa are reach and 0 otherwise):

Solution

A single BCD digit ocuupy 4 bits.its represnt 0000,0001,0010...0111,1000,1001.

For octal The maximum value is 0111 using 4 bit.

so 1000, and 1001 are the error combination

let A3A2A1A0 represt BCD value

and the ocatl conversion is error free when A3=0; when A3=1 the octal value represents the error input.

the equation for error function, F=A3