probably the counting board
probably an abacus. Invented by the Chinese.
It mostly depends upon what you mean by "computing". Computing device can simply mean that the device is programmable and capable of automated calculations. In this case, the earliest known computing device is the "castle clock",invented by Al-Jazari. It was considered the earliest programmable analog computer, dating to 1206. The castle clock was able to automatically open doors to represent that an hour in a day has passed, and it was also able to be programmed to change the amount of time it keeps track of to show that a day has passed, allowing the user to compensate for the changing lengths of day and night throughout the year.
The earliest known computing device, the Antikythera Mechanism, dates back to about 100 BC. It is mechanical and analog, it is believed to have done astronomical and navigational calculations.
I recall reading some time ago that the earliest recorded mechanical computing device is the Abacus. The article indicated that the exact time was not determined, but that evidence showed that it appeared at about the same time in both China and in Persia.
No, there were not operating systems in the earliest days of electronic digital computing.
poda myir
Yes. An iPad is a mobile computing device.
The first analogue computing device was the human mind. Yes, it's true; the human mind is an analog device.
1.Abacus 2.Pascals Adding machine 2.Difference Engine 3.Analytical engine above were earliest computing devices.
Yes, according to Sr. Charles Johnson Lebron
it is a 2 in 1 device
What is considered a mobile computing device and therefore shouldn't be plugged in to your Government computer