What is difference between??

Bit and Byte:

A bit is defined as: a single basic unit of information, used in connection with computers and electronic communication. All modern computers store and use data in digital form. The smallest unit of storage and measurement is one binary digit, therefore its name.
A byte, pronounced ‘bite’, is the next size up basic unit of measurement for information storage, usually consisting of eight bits. These 8 bits are grouped together to form a byte that is, a total or 8 grouped bits representing one character of data.
Therefore, so far we have two basic units of measuring digital information storage that have different capacities, they are:
• 1 Bit
• 8 Bits equal 1 Byte.

RAM and ROM:

RAM
i) It stands for random access memory.
ii) It is an optical disc, where data and information is stored permanently.
iii) RAM is the primary storage media.
iv) RAM is the primary storage device from which the system boots.
v) RAM is stored on RAM chip.
vi) The data or information stored on it can be written on or it can be erased.

ROM
i) It stands for read only memory.
ii) It is that part of CPU, where temporary information is stored.
iii) RIOM is the secondary storage media.
iv) System does not boot from ROM.
v) ROM is stored on a compact disc.
vi) The data or information stored on it neither be written on, nor it can be erased.

Hardware and Software:

Hardware
i) All the physical components of computer which can be touched, measured have weight and occupy space are collectively called computer hardware etc.
ii) Examples of hardware are: keyboard, mouse, joy stick, scanner, printer, CPU etc.

Software
i) Software can be defined as a set of instructions and codes written in a defined manner. In other words software are pre-written programs, which control the operation of computer.
ii) Examples of software are; DOS, windows, UNIX, XENIX, Linus, JAVA,

Star and Planet:

Star
i) Stars are self-luminous heavenly bodies.
ii) They do not revolve around the sun.
iii) They are usually stationary.
iv) Examples: fixed stars, binary stars.

Planet:
i) Planets are rocky non-luminous bodies.
ii) They revolve round the sun.
iii) They usually move.
iv) Examples: Mercury, Venus, Jupiter etc.

Battery and Cell:

Cell:
A cell is a DC voltage source in which chemical energy is converted into electricity.

Battery:
It is a device which produces electricity through the use of acid and other chemicals. It is assembly of many cells.

Radiotherapy and Chemotherapy:

1.A Radiation targets only the cancer cells. However, chemotherapy is administered through the blood and therefore, affects both cancerous and non-cancerous cells.
2. Though they can be used for any sort of cancer, radiation mainly targets solid tumours like those of the cervix, spine and skin.
3. Chemotherapy treats cancers through medicines, while radiation deals with cancer cells through rays.
4. Radiation results in additional side effects like internal inflammation, especially in the stomach and the intestine.