SAP 1It is a computer  which functions are to add and subtract numerical valuesIt has 6 registers namely the program counter, the memory address register, the instruction register, the A register, the B register and the output registerIt works in sequential procedures meaning it executes instructions one at a time. Program Counter0001---àWBUS--àIt is one of the registers of SAP 1That counts from 0000 to 1111 which are memory address locationsAnd passes it over to the WBUS --àInput and MAR0000It is one of the registers of SAP 1Its function is to accept the address that the program counter generates and latches it to the memoryIt tells the memory or the RAM where to access the instruction0000--àRAM16x8 RAMIt is the main memory of SAP 1 which has 16 eight bit locationsIt fetches the instruction from the memory location that is passed by the Input and MAR.0000 1001-àInstruction RegisterIt is one of the SAP 1 registersIt fetches the instructions from the RAM and gives to the Controller sequencer0000 10010000--àCS1001-àInput and MAR --àRAM---à0101Controller SequencerIt is the control unit of SAP 1It controls the activity of the whole systemIt dictates the sequence of activitiesIt sends CLK to PC and to complemented CLK0000  AccumulatorIt is one of the registers of SAP 1It is an 8 bit buffer registerIt stores the operand andB RegisterOne of the registers Adder/SubtracterArithmetic operation of SAP 1A low Su signal means the operation is additionA high Su signal means the operation is subtractionOutPut RegisterIt takes the data from the accumulator and interprets to the systems out put