CheTech Solutions

19/09/2021

3.5 inch Rpi LCD for raspabery pi

15/09/2021

Raspabery pi 3 A+ for sale...

09/03/2021

Ssd Power module burned due to surge, luckily mosfet and capacitor saved the rest...restored unit works as it is....

12/02/2021

Solid State Drive(SDD)

A solid-state drive is a solid-state storage device that uses integrated circuit assemblies to store data persistently, typically using flash memory, and functioning as secondary storage in the hierarchy of computer storage.

09/02/2021

How Black Boxes Are Made | How Do They Do It?

See how flight data recorders are designed, tested and how the valuable information they contain is recovered after an air disaster. | For more, visit http:/...

09/02/2021

A black box is a flight data recorder that must be in every air vehicle. All flight information is recorded into the black box with a specific algorithm. This makes the recorded flight data accessible to authorities when needed. Contrary to popular belief, the black box is mostly bright orange, not black. Black boxes that are resistant to the most extreme situations are one of the most special tools of the aviation research industry with their voice recording features.

08/02/2021

What Is an SD Card?

In general, memory cards are thin, light data storage devices. Their particular form factor makes them ideal as removable storage for small devices. You can pop a memory card into your camera, take enough pictures to fill it up, and then pop the card out, empty out its contents, and slip it back in.

An SD card might just look like one giant chip to a layperson, but the outside is actually a shell. Crack open the shell, and you’ll see something very similar to the inside of a typical USB flash drive. You will find one or more flash memory chips, along with a controller chip soldered to a printed circuit board. The NAND flash memory chip stores all of your data. When you plug your SD card into your computer, camera, or another device, data flows to and from the memory chip, organized and regulated by the controller chip. The controller keeps track of any bad blocks on the NAND chip as one of its many duties.

07/02/2021

How do SD Cards Fail?

Generally, SD cards and microSD cards are a bit less vulnerable to physical damage than USB flash drives. In many USB flash drives, the USB plug has a frail connection to the PCB that can easily be damaged. Since an SD card’s electrical contacts are built into the PCB, that is one less point of failure. Also, SD cards are usually tucked away very discretely in their devices, so it’s hard for them to be accidentally broken while in use.
But while an SD card can survive a fall that would kill a hard disk drive, it might not fare so well if it gets stepped on, driven over, etc. This could crack the PCB, or even the NAND chip itself. A cracked NAND chip is roughly equivalent to a hard drive platter with rotational scoring: It’s toast.
An SD card can also fail as a result of a power surge. It only takes a surge of three nanoseconds to short out a PCB. If an SD card is plugged into a device when power surge occurs, the PCB can be shorted out.