1. Hardware Programming

2. COMP102 Prog. Fundamentals I: Hardware / Slide 2 l Four components of a computer system: n CPU - central processing unit –Makes decisions, performs computations, and delegates input/output requests n Memory –Stores information n Input devices –Gets information from the user to the computer n Output devices –Sends information from computer to the user Hardware

3. COMP102 Prog. Fundamentals I: Hardware / Slide 3 Hardware

4. COMP102 Prog. Fundamentals I: Hardware / Slide 4 CPU l “Brains” of the computer n Arithmetic calculations are performed using the Arithmetic/Logical Unit (ALU) n Control unit decodes and executes instructions Arithmetic operations are performed using binary number system 0110 1101 1100 1111 0001 l CPU Examples n Pentium (for ordinary PC) n Sparc (for SUN workstation) n PowerPC (for MacIntosh) n K6 (for PC compatible)

5. COMP102 Prog. Fundamentals I: Hardware / Slide 5 Input and Output Devices l Accessories that allow computer to interface with user l Common input and output devices SpeakersMouse Scanner PrinterJoystickCD-ROM KeyboardMicrophone

6. COMP102 Prog. Fundamentals I: Hardware / Slide 6 l Application level n jobs: word processor, graphics designer, HTML designer, program tester l Programmer level n jobs: C++ programmer, DSP programmer l Systems level n jobs: operating system designer, web master, systems maintenance staff l Hardware level n jobs: VLSI chip designer, hardware designer Types of Computer Jobs