Useful tips for everyday
How do you check if a value is blank? Use the ISBLANK function to test if a cell is empty or not. For example, =ISBLANK(A1)…
Can I remotely turn off my Android phone? Remote Turn Off is a simple app, allowing users to remotely shut down the phone with the…
How do you find the DFT of a signal? The DFT formula for X k X_k Xk is simply that X k = x ⋅…
Why did my iPhone 12 just shut off and wont turn back on? First solution: Do the Forced Restart Quickly press and release the Volume…
How do I count the number of rows in a month in Excel? See screenshot: Notes: (1) In above formula, A2:A24 is the date column…
Can a website have two headers? Yes you can use multiple header elements in your documents, by virtue of the w3c documentation: A header element…
What are the advantages of an operational amplifier over a bipolar transistor? Transistor vs op-amp Transistor amp is simple, cheap and can achieve high speed…
Is USB twisted pair? USB requires a shielded cable containing 4 wires. Two of these, D+ and D-, form a twisted pair responsible for carrying…
What is orientation magnetic sensor? The orientation sensor is a combination between the magnetic field sensor, and gravity sensors. It tells you the angle of…
How do you add Access-Control allow credentials true? For a CORS request with credentials, in order for browsers to expose the response to frontend JavaScript…