1. We want to add a button to the tally counter in Section 9.2 that allows an operator to undo an accidental button click. Provide a method def undo(self) that simulates such a button. As an added precaution, make sure an undo doesn't cause the counter to be less than zero. 5 pts a) Your code with comments b) A screenshot of the execution Test Case: Reset 2 clicks Print Value 1 click Print Value 2 undos Print Value 2 undos Print Value

Im doing this last minute and literally none of my neighbors or people that my dad works with use excel so if anyone could me make up an example

Given a link with a maximum transmission rate of 32.8 mbps. only two computers, x and y, wish to transmit starting at time t = 0 seconds. computer x sends filex (4 mib) and computer y sends filey (244 kib), both starting at time t = 0. statistical multiplexing is used, with details as follows packet payload size = 1000 bytes packet header size = 24 bytes (overhead) ignore processing and queueing delays assume partial packets (packets consisting of less than 1000 bytes of data) are padded so that they are the same size as full packets. assume continuous alternating-packet transmission. computer x gets the transmission medium first. at what time (t = ? ) would filey finish transmitting? give answer in milliseconds, without units, and round to one decimal places (e.g. for an answer of 0.013777 seconds you would enter "13.8" without the quotes)

Whose task it is to ensure that the product flows logically from one step to another?