How many computers?

Someone recently asked me how many computers I have.  I didn't try to be be evasive, but it's a hard question for me to answer. Because my definition of a computer may differ from yours, counting is not as easy as you might think, but, here's an attempt:

iMac - Runs OS-X. My primary computer.  This is the one on which I do all my regular work - email, bills, doc preparation, etc., etc.

Macbook Air - Laptop, running OS-X.  I use it to do many of the same things as the iMac, and also use it for presentations and other stuff away from home.  In addition, I use it with a Windows emulator so as to have a portable computer for running Windows-specific communications software during communications exercises.

Home built PC - in my radio room.  This one runs Windows 7.  There are some programs for my radios that are only available on a Windows platform.  For example, I have a radio which is called a "Software Defined Radio." It has no front panel, and is basically a box with no controls and several high speed A-D/D-A converters, filters and other stuff of no interest to you.  The software to make it work only runs under Windows, on a relatively fast computer.  So, this computer is pretty much a single use computer.

RMS PC - This is a refurbished off-lease computer whose purpose is to run one software package.  That software has to be hosted on Windows.  It is a 24/7 communications server.  Other similar stations around the US communicate with this computer to forward message traffic.

Shuttle - This is a small computer, about the size of hardback book.  Currently it runs Linux, although it could run Windows.  Among other things, I use it as a personal webserver for web page development. At some point I may adapt it to use in my truck for GPS tracking and other jobs. Or not...  A while back I was having trouble with my Internet provider, and this computer, which connects with my local area network (as do all of the above) became a tool for me.  I wrote a small program to monitor and log my Internet connectivity, to prove just how bad my service was.

Linda's PC - A Windows machine which I will likely adopt for use as the controller for my 3-D printer.

Linda's laptop.  I may just get rid of this as it is rapidly becoming a dinasaur.

Beaglebones, Raspberry Pi's - these are tiny computers best suited for building special purpose devices. They run the Linux operating system.  I have several of each.  One of them might have been a better choice for the Internet monitor for which I used the Shuttle.

Arduinos - These are also tiny computers (2" X 3") which have microcontrollers.  They don't run operating systems per say, but can do all sorts of things when fitted with sensors and output devices.  For example, I have one set up to measure the speed of a rotating bicycle wheel as a project for the "Hands On" children's museaum in downtown Hendersonville.  I have several of these devices.

Tablets - I own several, all of which run the Android Operating system.  This includes a couple of Kindles, and a Samsung that I use for all sorts of stuff.  My cellphone is a Samsung which also runs the Android OS, and a lot of the apps on my phone are also on my Samsung tablet.

Notice that in spite of the fact that I use Apple computers, I have neither an iPhone nor an iPad.  Some of that is historical: I loved my old iPod, and I wanted an iPhone, but at the time that I was in the market for an one, my cell provider (Verizon) did not offer them.  And, I've already expressed my feelings about AT+T elsewhere in this blog.

I also have several defunct PCs, and two old Macs which are currently just taking up space.  I ought to get rid of them.

That's not all, but all I can think to enumerate at the moment.