0x29A – It’s only a number

Last week’s ToW was the six-hundred, three-score and fifth, and while this week’s is one more, it’s probably best if it’s not mentioned. As well as being called out in a certain old book, said number also features greatly in legend, light musical entertainment and popular fiction.

Other numbers attract a certain amount of superstition – some tall buildings don’t have a thirteenth floor, for example, and even big companies like Microsoft have been known to dodge bad luck by not shipping a v13 of a product (like Office – look at the File | Account | About dialog in any Office app, and you’ll see the version number – Office 2007 was v12 and Office 2010 was v14). Some cultures don’t much like the number 4 or 14 either.

One numerically interesting but easily overlooked app in Windows 11 is the venerable Calculator. Start it by pressing the Windows key and entering calc, or if you’re truly blessed, you might even have a physical button on your keyboard. The app starts in whichever mode it was last run – by default, a simple calculator with the same kinds of functions that were common on the popular pocket calculators of the 1980s.

But look at the hamburger menu on the top left and you’ll see so much more – from Programmer functions to convert numbers from one base to another (so you can decode hex error messages or “funny” binary t-shirts*), to a whole array of converter functions which let you quickly change currency (at the current rate) or transform from one measurement standard to another.

There’s a neat date calculator too, so you don’t need to resort to using an Excel formula to count how many days there are between two dates.

Back in Standard mode, you’ll see the history of your calculations on the right side, and you can use the Memory functions to store multiple numbers for future use; much better than the old one-and-done M- M+ and MR buttons on a pocket calc. There’s also a mode which keeps the calculator window on top of others, even if it isn’t the active window at the time.

If you have a full-sized keyboard, you’ll also probably have a NumLock key – that turns the numerical keypad on the right side on and off. In the early days of the PC, smaller keyboards didn’t have separate cursor keys, so these were sited on the keypad. In order to use these cursor functions – and the others, often doubled-up PgUp / PgDn etc – you’d switch NumLock off. And then swear when you went to use the numerical pad to quickly enter a number into some DOS application, only to find you’ve moved the blinking cursor around instead.

*convert each of the 8-bit binary numbers in the t-shirt to decimal; assuming the decimal number is the ASCII code corresponding to a letter, open a new blank doc in Word, and holding down the ALT key, enter the decimal number on your numeric keypad. Oh, if you’ve only got a laptop with no separate Numlock/keypad, bad luck.