(i) 16-bit - Intel 80186, Intel 80286
(ii) 32-bit - Intel 80486, Pentium IV
(iii) 64-bit - Intel dual core, Core 2duo, core i3, Core is, Core :7
(iv) 128-bit- Power PC 460 Sx embedded processor.

(i) BIu - Ray disc was developed to enable recording, rewriting and playback of high-definition video as well as storing large amount of data.
(ii) DVD uses a red laser to read and write data. But, Blu-ray uses a blue-violet laser to write. Hence, it is called as Blu-Ray.

Flash memory devices:
(i) Flash memory is an clectronic (solid-state) non-volatile computer storaye medium that can be electrically erased and reprogrammed.
(ii) Flash memories can be used in personal computers, Personal Digital Assistants (PDA). digital audio players, digital cameras and mobile phones.
(iii) Flash memory offers fast access timcs. The time taken to read or write a character in memory is called access is time.
(iv) Examples for Flash memories arc pen memory drives, cards etc.
EEPROM :
(i) Electrically Erasable Programmable Read Only Memory can be erased by exposing it to an electrical charge.
(ii) EEPROM is non-volatile.
(iii) EEPROM is slower in performance.

(i) Serial Port 
(ii) Parallen Port
(iii) USB 3.0
(iv) VGA connector
(v) Audio plugs
(vi) PS/2 Port
(vii) SCSI Port
(viii) High Definition Multimedia Interface(HDMI).

There are two types of microprocessors based on their instruction sets.
(i) Reduced Instruction Set Computers (RISC)
(ii) Complex Instruction Set Computers (CISC)

Microprocessors can process instructions. The microprocessors can be classified as follows based on the size of the data.
1. 8-bit microprocessor
2. 16-bit microprocessor
3. 32-bit microprocessor
4. 64-bit microprocessor

1. Computer Organization deals with the hardware components that are transparent to the programmer.
2. Computer architecture deals with the engineering considerations involved in designing a computer.