BU250 part of Excel Cell Electronic (ECE) is a built-in electronic cell designed for use in Microsoft Excel spreadsheets. It is used to store formulas and formulas-based results as well as display values in a graphical and numerical format. This electronic cell can be used to store and manipulate data, calculate formulas and equations, and view results in graphical output. The BU250 part of Excel Cell Electronic (ECE) includes a variety of functions, including sum, sort, average, standard deviation, and variance. It can also be used to create bar and line graphs, scatter plots and trendlines, and it is also able to work with logarithmic and power common functions.