and Answers | A+ Score Assured
CPU - 🧠ANSWER ✔✔Central processing unit, the portion of a computer
that selects instructions, processes them, performs arithmetic and logical
comparisons, and stores results of operations in memory.
Main memory - 🧠ANSWER ✔✔Memory that works in conjunction with the
CPU. Stores data and instructions read by the CPU and stores the results
of the CPU's computations.
Storage hardware - 🧠ANSWER ✔✔Hardware that saves data and
programs. Magnetic disks are by far the most common storage device,
although optical disks, such as CDs and DVDs, also are popular.
, Different types of hardware? - 🧠ANSWER ✔✔PC, Tablet, Smartphone,
Server, Server Farm
Hertz vs bitz - 🧠ANSWER ✔✔CPU speed is expressed in cycles called
hertz.
Slow personal computer speed of 1.5 Gigahertz.
Fast PC 3+ Gigahertz, with dual processors.
CPUs classified as 32-bit or 64-bit.
Need a 64-bit processor to effectively use more than 4GB of memory.
volatile vs. nonvolatile - 🧠ANSWER ✔✔The cache and main memory are
volatile because their contents are lost when power is off.
magnetic and optical disks are nonvolatile, meaning their contents survive
when power is off.
What's a server? - 🧠ANSWER ✔✔a computer that is designed to support
processing from many remote computers and users. It is basically a PC on
steroids.