Use a Brookshear machine to add 2, 12, and -4

First convert to two's complement notation in 8 bits. Next convert the binary to hexadecimal. Then To add these we need to enter them into memory cells. The cells hold 16 bits each in Memory List format, but our data is only 8 bits, so we have to pad our data to fit by adding 00. Then use the brookshear machine to add.