Your Personal Computer is a system, consisting of many components. Some of those components, like Windows XP, and all your other programs, are software. The stuff you can actually see and touch, and would likely break if you threw it out a fifth-story window, is hardware.
1. Point: To point to an item means to move the mouse pointer so that it's touching the item.
2. Click: Point to the item, then tap (press and release) the left mouse button.
3. Double-click: Point to the item, and tap the left mouse button twice in rapid succession - click-click as fast as you can.
4. Right-click: Point to the item, then tap the mouse button on the right.
5. Drag: Point to an item, then hold down the left mouse button as you move the mouse. To drop the item, release the left mouse button.
6. Right-drag: Point to an item, then hold down the right mouse button as you move the mouse. To drop the item, release the right mouse button.
The system unit is the actual computer; everything else is called a peripheral device. Your computer's system unit probably has at least one floppy disk drive, and one CD or DVD drive, into which you can insert floppy disks and CDs. There's another disk drive, called the hard disk inside the system unit, as shown in Figure 2. You can't remove that disk, or even see it. But it's there. And everything that's currently "in your computer" is actually stored on that hard disk.
The Mouse
Obviously you know how to use your mouse, since you must have used it to get here.Your mouse probably has at least two buttons on it. The button on the left is called the primary mouse button, the button on the right is called the secondary mouse button or just the right mouse button. I'll just refer to them as the left and right mouse buttons. Many mice have a small wheel between the two mouse buttons, as illustrated in Figure 3.
Obviously you know how to use your mouse, since you must have used it to get here.Your mouse probably has at least two buttons on it. The button on the left is called the primary mouse button, the button on the right is called the secondary mouse button or just the right mouse button. I'll just refer to them as the left and right mouse buttons. Many mice have a small wheel between the two mouse buttons, as illustrated in Figure 3.
1. Point: To point to an item means to move the mouse pointer so that it's touching the item.
2. Click: Point to the item, then tap (press and release) the left mouse button.
3. Double-click: Point to the item, and tap the left mouse button twice in rapid succession - click-click as fast as you can.
4. Right-click: Point to the item, then tap the mouse button on the right.
5. Drag: Point to an item, then hold down the left mouse button as you move the mouse. To drop the item, release the left mouse button.
6. Right-drag: Point to an item, then hold down the right mouse button as you move the mouse. To drop the item, release the right mouse button.
The Keyboard
Like the mouse, the keyboard is a means of interacting with your computer. You really only need to use the keyboard when you're typing text. Most of the keys on the keyboard are laid out like the keys on a typewriter. But there are some special keys like Esc (Escape), Ctrl (Control), and Alt (Alternate). There are also some keys across the top of the keyboard labeled F1, F2, F3, and so forth. Those are called the function keys, and the exact role they play depends on which program you happen to be using at the moment.
Like the mouse, the keyboard is a means of interacting with your computer. You really only need to use the keyboard when you're typing text. Most of the keys on the keyboard are laid out like the keys on a typewriter. But there are some special keys like Esc (Escape), Ctrl (Control), and Alt (Alternate). There are also some keys across the top of the keyboard labeled F1, F2, F3, and so forth. Those are called the function keys, and the exact role they play depends on which program you happen to be using at the moment.
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