This lecture notes covers unit1. 1. Introduction: M255 module: Object Oriented Programming with Java concerns on teaching the principles of Object Oriented such as objects, classes, inheritance, and polymorphism using Java language. You have two CDs in this module: • Online Application CD which has the StarOffice application, and • M255 CD that has the blueJ, microworld and others. When you install M255 CD be sure that all options are selected, just determine the folders you want to install on and follow instructions during the installation process. 2. Fundamental hardware and software concepts What is a computer? A device that accepts input, processes data, stores data, and produces output. These are the main basic tasks of a computer. Simply, any computer system is composed of computer hardware and software. The hardware components of a computer system are the electronic and mechanical parts. The software components of a computer system are the intangible parts: it is a general term of all the applications, programs, and systems that run on your computer. Software consists of sets of instructions that tell a computer how to perform a particular task. 2.1 Computer Hardware The main hardware devices are classified as: 1. Essential parts of a computer : CPU & main memory 2. Peripheral devices, which is any component of the computer that is not part of essential devices, such as: Input/Output devices, secondary storage (Storage devices). Some peripherals are mounted in the same case as processor such as hard disks, others such as printers are physically outside the computer. An input device gathers and translates input into a form that the computer can process, these are devices such as: keyboard, mouse, scanner, microphone, cardreader, and bar reader.
Prepared by: Dr. Bayan Abu Shawar, AOU-Jordan
Processing data is done in a device called central processing unit (CPU). A processor is, (the brain of a... [continues]
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