Lecture 3 - Using the input devices. After studying this chapter you will be able to understand: Parts of computer systems, computer hardware, processor, memory, software system, application software, system software, utility programs, data, user, information processing cycle. | Using the Input Devices Summary of Previous Lecture Parts of Computer Systems Computer Hardware Processor, Memory Software system Application software, system software, utility programs Data User Information Processing cycle Today’s Objectives Identify the five key groups on a standard computer keyboard. Describe the purpose of a mouse and the role it plays in computing. Identify the five essential techniques for using a mouse. Identify three common variants of the mouse. How to reduce stress injuries from computer use The Keyboard The Keyboard A computer keyboard is a hardware device that functions in accordance to the instructions made by the user. It comprises circuits, switches and processors that help in transferring keystroke messages to the computer. Keyboard skill is call Keyboarding. Keyboard connector Keyboards are generally plugged into the rear of the CPU, on the motherboard, using a purple PS/2 connector, or on USB port. What is Keyboarding? The ability to enter text by using the correct fingers without looking at the keys (also known as touch typing). Having adequate keyboarding skills to enable you to use the computer more effectively and be more productive. The Keyboard In today's technology driven world, everyone is aware about computing and the usage of computer keyboard. We all know that keyboard is an input device that functions in accordance to the instructions of the user. Computer keyboards are used for performing various tasks such as typing on a word processor or text editor, accessing menus and playing games. Though pressing a key corresponds to typing a letter, sign or symbol, it may also represent computer commands. For example, pressing the F5 key is a command for refreshing. A standard computer keyboard has about 80-110 keys. Most keyboards use the QWERTY layout, named for the first six keys in the top row of letters. The Keyboard - Standard Keyboard Layout 5. Cursor-movement keys 4. Modifier keys 3. Function keys 2. Numeric keypad . | Using the Input Devices Summary of Previous Lecture Parts of Computer Systems Computer Hardware Processor, Memory Software system Application software, system software, utility programs Data User Information Processing cycle Today’s Objectives Identify the five key groups on a standard computer keyboard. Describe the purpose of a mouse and the role it plays in computing. Identify the five essential techniques for using a mouse. Identify three common variants of the mouse. How to reduce stress injuries from computer use The Keyboard The Keyboard A computer keyboard is a hardware device that functions in accordance to the instructions made by the user. It comprises circuits, switches and processors that help in transferring keystroke messages to the computer. Keyboard skill is call Keyboarding. Keyboard connector Keyboards are generally plugged into the rear of the CPU, on the motherboard, using a purple PS/2 connector, or on USB port. What is Keyboarding? The ability to enter text by .
