Computer Science & Software Engineering

CSCI 255 Introduction to Embedded Systems Fall 2011

Midterm Information

• 2 hours, during lab on Monday, October 17th, 2-4pm
• Closed book, closed notes, no electronic devices
• You are allowed a one-sided 8 1/2 x 11 note sheet, hand-written
• You will be given Appendix A-C from The 8051/8052 Microcontroller for use during the exam
• No makeups will be considered without an official University excuse

• Lectures 0-11
• The 8051/8052 Microcontroller, Ch 1-7, Ch 11, Appendix B
• Class handouts
• Lab assignments

• Differences between general-purpose and embedded systems
• Challenges of embedded development
• Number systems: binary, decimal, hexadecimal, octal
• Specifying decimal, hex and octal numbers in C
• Bitwise operations AND, OR, NOT, XOR
• C operators for bit operations, left and right shift, bit masking
• Two's complement representation for negative numbers
• Adding binary numbers
• Subtraction of numbers in two's complement
• Overflow behavior, unsigned and two's complement integers
• Basic building blocks for logic gates
• Logic gates, truth tables and diagram symbols: AND, OR, NOT, NOR, NAND, XOR, XNOR
• Truth tables
• Sum-of-products given a truth table
• Circuit given a truth table or sum-of-products expression
• Majority and odd Boolean functions
• Minimizing Boolean expresssion using rules of Boolean algebra
• Minimizing 2-4 variable Boolean expression using a Karnaugh map
• Multiplexers, demultiplexers
• Combinational vs. Sequential circuits
• Latches and flip-flops
• Use of a clock in computer circuits
• Building a full adder
• Arithmetic Logic Unit (ALU)
• Building a register from a set of flip-flops
• Building a register bank from a set of registers
• Basic input/output, CPU coordinated versus DMA
• Computer buses
• Basic compoenents and functionality of a CPU
• Fetch-and-execute cycle
• Memory architectures, Harvard vs. Von Neumann
• 8052 eductional board details such as ports, buttons, LEDs
• Process of building and running software on the 8052
• Assembly language syntax: labels, comments, instructions
• Declaring literal values in assembly
• 8052 memory addresses, register banks, basic SFRs (P0-P3, ACC, B, SP, PSW)
• Assembly: moving data, setting/clearing bits, incrementing/decrementing values
• Assembly: math operations, bitwise operations
• Assembly: jumping, branching on values, creating loops
• Assembly: creating and calling subroutines, effect on the stack
• 8052 addressing modes: immediate, direct, indirect, code indirect
• Calculating number of cycles/time of give assembly program
• Big Endian vs. Little Endian

Page last updated: August 16, 2012