Secondary Storage

Some examples of Magnetic Hard Disks are Samsung/Seagate 1TB 2.5 inch 5400RPM SATA II Hard Disk Drive      

There are three different type of Secondary Storage, Magnetic Hard Disks, which are the most common type of secondary storage, Optical Disks, for example CDs and DVDs, and Flash Memory, which is the electronically alterable Read Only Memory, which costs £49.99, Generic Hard Disk Drive 250GB SATA II which costs £25.99.

Binary Logic

 Binary Logic

 

Computer system use the BINARY arithmetic system which basically is a number system that uses only 0 and 1 to represent all numbers.

 

The digital computer uses an arrangement of tiny electronic switches (transistors) called LOGIC GATES connected together, which are used to manipulate the signals within the processor.

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Today we learned about what a CPU is and how it works.
A CPU works by receiving the information from the RAM ( INPUT ) and it goes to the ROM to find out how to do it, this method is executed in Lighting Speed though so it doesn't affect the user.
When the CPU gets the right knowledge for how to execute the command that we commanded he executes it.

We also learned that the CPU fetches the next instruction, decodes it and executes it before repeating the process. This process is called Fetch-Execute Cycle.