The full ATX motherboard size is 12 in long by x 9.6 in wide (305 mm x 244 mm). Since it came out in 1995, the ATX computer form factor has replaced the old AT form in virtually all computers. ATX means Advanced Technology Extended.
Basic difference between these are :- AT means "Advance Technology" while ATX is used for "Advance Technology Extended" SMPS. With respect to AT SMPS, ATX has an extra Plug of +12v Supply for Motherboard. It has four wires connected in square size plug. Two of them are Yellow and other two are black.
Extended Memory 64 Technology
Extended ASCII is 8-bit encoding which is wider than standard ASCII and also includes all characters from standard ASCII encoding.ASCII is 7-bit, 128 possible values; Extended ASCII is 8-bit , 256 possible value;128 first characters of Extended ASCII is the same as ASCII, next 128 are additional. This why it is called Extended ASCII.What is ASCII?ASCII is mainly English language characters encoding, that is used for representation of text information.
ECHS= Extended Cylinder Head Sector
Base and Extended Memory
Advanced technology extended
Advanced Technology Extended die
Advanced Technology Extended
ATX (Advanced Technology Extended) is a combination of standards for computer system power supplies and chassis dimensions. It was developed as a replacement for the once-common AT form factor.
Advanced Technology eXtended. It is a formfactor and the successor to AT.
Advanced Technology Extended Switched Mode Power Supply
BTX
Personal Computer - eXtended Technology
At smps have only 20 pin power connector atx have 20 + 4 pin power connectors atx smps 24 + 4 pin power connectors at (advanced technology)is old model smps atx (advanced technology extended) is new model
I have often wondered what ATX in ATX software stood for. I always just ignored it but upon further inspection I have discovered that the ATX stands for Advanced Technology Extended.
A new standard replacing ATX (Advance Technology Extended) standard. BTX (Balanced Technology Extended) defines how air should flow inside the computer case and hence how the motherboards and power supplies should be constructed. It started in 2004 and in fact was not accepted, probably mainly due to main computer producers (Intel). Motherboard producers ignored new standard so it naturally died.
usually any motherboard that has a form factor above mini or micro atx (atx, extended atx, super atx) will have atleast 4 if not more expansion slots available by default and normally an atx (and possibly a extended atx) motherboard should fit in a full tower case (a super atx motherboard will more than likely need a super tower)