Using COM0A1 and COM0A0 write AVR assembly code that generates a periodic square wave with 4 kHz frequency and 50% duty cycle on the OC0A pin (same as pin 6 of port D) using the Timer/Counter0 in CTC mode. Assume a system clock frequency of 16 MHz and use the follow skeleton code.

Provided code:

.INCLUDE "m328Pdef. inc"
.ORG $0000
RJMP INITIALIZE ;

.ORG $0030
INITIALIZE:

; ...Your code goes here...

MAIN: RJMP MAIN; Do nothing loop

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.