EPROM Chips Importance And Uses

EPROMs are Erasable programmable read only memory chips. This device is mainly used as a memory to store a small amount of data. Some micro-controllers use this memory to store its program contents. EPROMs must be erased before they are rewritten. This is usually done by exposing them to UV light through the window provided on the chip. Exposure of the chip to UV light for longer periods of time can over erase the memory cells of EPROM which may not be readily fixable. Modern EPROM chips have a capacity ranging from few KB's to nearly 8 MB of storage space. To erase EPROM's, they must be removed from the circuit. So, this is not practical in many applications these days. Some versions of Intel 8048 microcontrollers used EPROM in their processors. In the modern world, EPROM chips are at the end of their existence as they are being succeeded by newer type of memories which are practically easy to implement like flash memory.
By: Sandeep Mahanthi

The Idea of Selling Cheap Used Laptops

Buying cheap used laptops does not necessarily mean it has a low quality. Some laptops that are being advertised as cheap used laptops are branded laptops that need to be sold out by some companies.

Below are the possibilities why most companies sell their used laptop for a very reasonable price.

• Most laptops that are sold for a cheaper price come with a warranty. Companies prefer to send the whole computer unit than to change a part of a laptop because of some malfunctions within the period of warranty.
• Companies have old model laptops in stock and to free up space they have to send then quickly.
• Computer companies buy used laptops at the lowest price then change/repair some parts so it will be in good condition. As a result, they will sell these laptops as refurbished or used models.

By: giepuz

By: April A.

EPROM Chips Importance And Uses

EPROMs are Erasable programmable read only memory chips. This device is mainly used as a memory to store a small amount of data. Some micro-controllers use this memory to store its program contents. EPROMs must be erased before they are rewritten. This is usually done by exposing them to UV light through the window provided on the chip. Exposure of the chip to UV light for longer periods of time can over erase the memory cells of EPROM which may not be readily fixable. Modern EPROM chips have a capacity ranging from few KB's to nearly 8 MB of storage space. To erase EPROM's, they must be removed from the circuit. So, this is not practical in many applications these days. Some versions of Intel 8048 microcontrollers used EPROM in their processors. In the modern world, EPROM chips are at the end of their existence as they are being succeeded by newer type of memories which are practically easy to implement like flash memory.
By: Sandeep Mahanthi

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The Idea of Selling Cheap Used Laptops

Buying cheap used laptops does not necessarily mean it has a low quality. Some laptops that are being advertised as cheap used laptops are branded laptops that need to be sold out by some companies.

Below are the possibilities why most companies sell their used laptop for a very reasonable price.

• Most laptops that are sold for a cheaper price come with a warranty. Companies prefer to send the whole computer unit than to change a part of a laptop because of some malfunctions within the period of warranty.
• Companies have old model laptops in stock and to free up space they have to send then quickly.
• Computer companies buy used laptops at the lowest price then change/repair some parts so it will be in good condition. As a result, they will sell these laptops as refurbished or used models.

By: giepuz

By: April A.