Lab 4.1
1) Both Javascript and HTML are programming lanuages in that with both you can write webpages.
   They are different in that Javascript acts more as an extension of HTML in the design of webpages.

2) The input of a television is when you change the channel or volume or any setting on the television set through
   through the remote or the buttons on the set. The output is the sound you hear and the picture you see.
   
   The input of a portable CD player comes from when you put a CD in the player, change the track or volume.
   The output is what you hear playing from the CD player.

3) The input of this lab what you type into Notepad. The output is what you see pop-up as a result of that input.
   The input of the currency converter is the number the user types in and the output is the resulting converted currency.