1 VGA - VGA is an analog output, and was most common in the CRT-era of computer displays. It has largely been phased out of any recent hardware, but you may encounter it with older computers or CRT monitors.  DisplayPort - This is a digital connection, similar to HDMI.
There is evidence that iron was known from before 5000 BCE. The oldest known iron objects used by humans are some beads of meteoric iron, made in Egypt in about 4000 BCE. The discovery of smelting around 3000 BCE led to the start of the iron age around 1200 BCE and the prominent use of iron for tools and weapons.
Iron Ore is a mineral Block that was added in Update 0.1.0. In Infinite Worlds, Iron can be found commonly in Caves on Levels 1-64. It can be found in Mineral Veins of 2-8 Blocks or more. It can also rarely be found above ground near exposed areas of Stone. It can be mined with a Stone Pickaxe or above.