Giga means 10^9 (10 to the power of 9) or 1,000,000,000 (1 billion).
Gibi means 2^30 (2 to the power of 30), or 1,073,741,824. So those are almost the same. The reason for the later is that computers really like to use base-2.
Gigi doesn't mean anything, maybe you meany gibi or giga.
A bit is the smallest amount of information a computer can think about.
A byte is 8 bits.
Giga-hertz per sec is a meaningless phrase. Hertz is a term that basically means "cycles per second", so if you say your computer has a 2.4 GHz (gigahertz) processor that means it takes 2,400,000,000 steps per seconds. But to add "per sec" after hertz is wrong because hertz already means that.
Yes, 1 gigahertz is 1 billion cycles per second
A gigahertz (GHz) is one billion cycles per second. High-speed computers have internal clocks rated in GHz.
Gigahertz
One gigahertz (GHz) is a unit of frequency equal to one billion cycles per second. It is commonly used to measure the clock speed of a computer processor, indicating how fast it can execute instructions.
1 Gigahertz (GHz) is equal to 1 billion cycles per second.
... billion cycles per second.
-Hertz. Or cycles per second. Megahertz, GigaHertz, etc.
Gigahertz
gigahertz
gigahertz
It means 1.5 Gigahertz. This refers to the number of times the CPU clock ticks per second. So in this case, 1.5 Gigahertz would mean that the clock would cycle 1,500,000,000 times per second.
i am not sure what processer is in the ipad but a computer speeds are measured in Gigahertz per second (GHz)​