Final Exam Topics/Review List

• Interrupts and Interrupt Service Routines (ISRs) including volatile for values changed by ISR
• Hexadecimal, binary, decimal, 2's and 1's complements
• UARTS
• baud rate -- how long it takes to transmit one byte to calculate this.
• If it's 8N1 at 9600 baud: 1 stop bit plus 8 data bits plus 1 start bit => 10 bits 9600 / 10 => 960 8 bit bytes per second. One byte takes 1/960 seconds which is about 1 ms.
• Slides 4, 5, 9 in UART Chapter 22
• settings (8N1 for example -- 8 bits, no parity, 1 stop bit.
• Polling mode versus using ISRs
• OSI network model -- physical versus data layer
• No MARIE or CPU architecture on final.