What contains buttons for commonly used commands?

The Quick Access Toolbar provides access to frequently used commands, and the option to customize the toolbar with the commands that you use most often. By default, the New, Open, Save, Quick Print, Run, Cut, Copy, Paste, Undo, and Redo buttons appear on the Quick Access Toolbar, as shown in the following image.

Note:

• When using the undo and redo commands, consider that these actions may not take effect on options or information that is changed in every panel. In addition, if you change multiple options in one panel, for example, the undo or redo command will reverse all of those indicated changes in one action.

• The Cut, Copy. and Paste commands can be used on text, objects on the HTML canvas and Document canvas, and fields on the Report canvas.

The Customize Quick Access Toolbar button (down pointing arrow) appears on the Quick Access Toolbar and opens the Customize Quick Access Toolbar menu. This menu contains a list of the default commands on the toolbar. You can clear these commands to hide them from the toolbar. There are also options to add more commands with the Customize dialog box, move the Quick Access Toolbar below the ribbon, and hide the ribbon.

To add commands to the Quick Access Toolbar, right-click a command and select Add to Quick Access Toolbar. To remove these commands from the Quick Access Toolbar, right-click their icon on the toolbar and select Remove from Quick Access Toolbar.

You can also add commands using the Customize dialog box. To access the Customize dialog box, select More Commands from the Customize Quick Access Toolbar menu. From the Customize dialog box, you can choose which commands you want to add to or remove from the Quick Access Toolbar, as well as the order in which the commands appear.

The Quick Access Toolbar is always available. By default, it is located in the upper-left corner of the App Studio interface. To move the Quick Access Toolbar below the ribbon, click the arrow button, and then click Show Below the Ribbon.

A computer is an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program. Basic computer skills include understanding how to type, knowing social media, and having general web skills.

GENERATIONS OF COMPUTERS :

1. First Generation - 1940-1956: Vacuum Tubes 
The 1st computers used vacuum tubes for circuitry and magnetic drums for memory and also were often enormous, which took up entire rooms.

2. Second Generation - 1956-1963: Transistors
In this, the transistors replaced vacuum tubes and ushered in the second generation of computers.

3. Third Generation - 1964-1971: Integrated Circuits
The development of the integrated circuit was the hallmark of this generation. Transistors were minimised in size and was placed on silicon chips, called semiconductors, which drastically increased the speed and efficiency of computers.

4. Fourth Generation - 1971-Present: Microprocessors
The microprocessor brought this generation of computers, as thousands of integrated circuits were built onto a single silicon chip. During the first generation filled an entire room could now fit in the palm.

5. Fifth Generation - Present and Beyond: Artificial Intelligence
Fifth-generation computing devices which are based on artificial intelligence, are still in development,  though there are some applications, likes voice recognition, that are being used today.

Main Parts of Computer are:

(i) Computer hardware:
Hardware components are those which can be touched physically. It includes the computer case, monitor, keyboard, and mouse. It also includes all the parts inside the computer case, such as the hard disk drive, motherboard, video card, and many others.

(ii) Computer software:
Software is a set of instructions that tell a computer what to do. It comprises the entire set of programs, procedures, and routines associated with the operation of a computer system.  A set of instructions that directs a computer's hardware to perform a task is called a program, or software program.

Common examples of software are:

(a) Adobe Photoshop.

(b) Picasa.

(c) VLC Media Player.

(d) Windows Media Player.

(e) Windows Movie Maker.

(f)Windows, MacOS, Linux

A few of the basic types of Computer are as follows:

(a) Mainframe Computer.

(b) Supercomputer.

(c) Workstation Computer.

(d) Personal Computer (PC)

(e) Apple Macintosh (Mac)

(f) Laptop computer (notebook)

(g) Tablet and Smartphone.

Input/Output devices:

I/O devices are the bits of hardware used by a human (or other systems) to communicate with a computer. 

Example: A keyboard or computer mouse is an input device for a computer, whereas monitors and printers are output devices.

Which toolbar has buttons for most commonly used commands?

What contains the most commonly used commands?

Which toolbar contains the frequently used commands?