The Difference between Medicare and Medicaid. Medicare and Medicaid are both federal healthcare programs, but there are some major differences between the two. These differences primarily have to do with who runs them, who qualifies for them, how much users pay and what services they cover.
Product key on a Proof of License Certificate of Authenticity for Windows Vista Home Premium. A product key, also known as a software key, is a specific software-based key for a computer program.It certifies that the copy of the program is original.roduct key on a Proof of License Certificate of Authenticity for Windows Vista Home Premium. A product key, also known as a software key, is a specific software-based key for a computer program.
Product Key - Where To Find Product Key. 1) If you bought a computer with Windows preinstalled there should be a Certificate of Authenticity (COA) sticker somewhere on your computer, on some laptops itâs in the battery bay. It will have a 25 character alphanumeric code on it - that is your product key. If it's not on your computer look in your paperwork or on any CD/DVD cases that were included with the computer. 2) If you bought a retail copy of Windows the key should be included in the box.