A cell in a computer refers to a specific location on a spreadsheet or worksheet. It is the intersection of a row and a column, where a row and column meet. Each cell has its own name or cell address based on its column and row. Cells are the basic building blocks of a worksheet, and any information entered into a spreadsheet is stored in a cell. Each cell can contain different types of content, including text, formatting, formulas, and functions. Cells can be modified by entering data, formulas, or functions, and any modifications made while a cell is highlighted will be limited to that cell in the worksheet. The cell reference (cell address) is updated while moving in a spreadsheet with the keyboard arrow keys or by clicking a cell with the mouse. The column and row headers are highlighted to show the current cell location. The rows and columns can be increased by using keyboard shortcuts such as Tab, Shift+Tab, Home, Ctrl+Home, and Ctrl+End.