The beautifully Air 1st Gen
thin design makes this tablet easy to hold yet it still holds plenty of power with the A7 chip and the HD display. The operating system manages all software and hardware, including files, memory, and connected devices. Most importantly, it lets you interact with your device and your programs in a visual way; otherwise, you'd be typing computer code to get anything done. The clock speed of the processor, measured in hertz (Hz), is defined as the number of operations the central processing unit (CPU) can carry out in a single second. Working in combination with system memory, the power of the processor determines the complexity of software you can run, how many programs you can have open at the same time, and how fast those programs will run.