It is known as the Insert Function dialog box. You can get help from it and information on the arguments it may have.
Functions can be entered directly in the Formula Bar. Beside the Formula Bar you will see the fx icon. Clicking on it will open up a dialog box to allow you to enter a function.
You can enter them by just typing them in with the keyboard. You can also use the Insert Function facility.
The PMT function calculates what the payment will be. It does not ask you what each payment will be. So there is no part of the PMT dialog box where you enter each payment. As you type values into the boxes provided, at the bottom of the dialog box it does show what the result would be based on the values you've entered.
Each function has to be put in correctly. Some formulas have different requirements than others. They may need values to work on. If they are not provided properly, then the functions won't work. So yes, there are many ways that a function can be entered wrongly.
The Tab key will move from one cell to the next in Excel, or through different options in a dialog box if one is open. If you are typing when you hit the tab key it will enter what you have typed into that cell and move the cursor one cell to the right.
Excel is not a database itself, but a lot of spreadsheets by their nature are databases in their structure if laid out like a table. Excel also provides a range of database facilities and inbuilt database functions. Amongst the facilities are the ability to sort and to apply filters and use forms to enter data. The inbuilt functions mainly correspond to other functions in Excel, except that they can be done with criteria applied to the database. So like the SUM, MIN and MAX for example, there are functions called DSUM, DMIN and DMAX, amongst others.
You can use the clipboard in Excel. It is a facility as opposed to a traditional function, like the SUM function or AVERAGE or MAX and other functions that are built in to Excel.
Fx represents functions. It is on the Formula Bar and on the Insert Function Button. Clicking on it starts the process of allowing you to enter a function.
You can enter Msinfo32.exe in the run dialog.
This question is not clear. You can enter a number in Excel by clicking on a cell and typing the number from the keyboard.
Calculate means Excel will evaluate formulas and functions to display the result. You can turn calculate to manual or auto. When it is on auto, everything is updated in real time. Manual will update when you open Excel or requires to you click the calculate button every time you want to see results.
Alt + Enter