Question

Compare and contrast the following technologies (i) SRAM and DRAM (ii) USB and Serial Port (iii)Joystick and Mouse (iv) Projection displays and LED display

Answer 1

I)SRAM and DRAM - SRAM are the modes of RAM that uses transistors and latches whereas DRAM uses transistors and capacitors in construction. SRAM are expensive as compared to DRAM.

II)USB and Serial Port- A Serial Port is used in a computer to connect the devices whereas USB is a standard cable connection interface between personal computers and other electronic devices.  

III)Joystick and Mouse-A mouse can be moved up and down forth and back by a person’s hand whereas a joystick is stationary and is made of a stick and base.  

IV)Projection displays and LED displays- The Projection displays can be seen when the ambient light is controlled whereas LED displays are visible at sunlight also.