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Thursday, September 16, 2010

Sunset

Tungabhadra Dam- Hospet




Sunset at TB dam, Hospet

ITPL- Bangalore- Discoverer building at night

Cholecystectomy specimen- Gall badder with gall bladder stone

Cavernous Hemangioma of scalp- image

Appendectomy specimen- 10 cm long appendix

Rheumatoid arthritis- toes

Hammer toes



Hallux valgus

Rheumatoid arthritis- finger changes


Typical swan neck deformity and ulnar deviation of fingers in this old lady with RA

Venous ulcer of leg



Pseudoganglia

Neuro fibromatosis image



Huge lipoma over the back.


Platy-nychia with associated iron deficiency anaemia.


The green cover of amboli ghats

Computer keyboard ripped open

I ripped open my usb keyboard as it was not working inorder to learn and try fixing it.
when the keys are pressed  a contact is made between two electrode points below the key (the white sheet of plastic with lots of lines actually has 3 layers of plastic, with two on outer side having conducting stuff just below the key and a middle neutral layer of plastic sheet in order to avoid contact between the electrode unless a key is presed)

the information is then transferred to a small electronic chip from which the wore connects the keyboard either  to ps/2 port or the usb port.

plastic sheet with lots of printed conducting lines. has 3 layers


Juction between plastic membrane and the circuit.




the circuit   visible after removing the membrane.



the keys with circuit on top left corner. 


close up of keys. Each key has a central hard portion to press against the membranes in order to generate a signal.