Early adulthood
 begins in late teens/early 20year and lasts through the 30 year. 
Early adulthood is a time of:
 establishing personal and economic independence
 developing a career

Adolescence :  Is a transition period from childhood to adulthood. It is based on childhood experiences
and accomplishments. It begins with the appearance of secondary sex characteristics and ends when
somatic growth is completed and the individual is psychological mature. 
Physical growth:
Weight:

School Age
School-age period is between the age of 6 to 12 years. The child's growth and development is Characterized by gradual growth . 
Physical Development
Weight:
 School–age child gains about 3.8kg/year.

The combinational logic circuit is built from logical gates only. While the sequential logic circuit is mainly built from flip flops in addition to logical gates

PRESCHOOLERS STAGE
It is the stage where child is 3 to 6 years of age. The growth during this period is relatively slow.
Physical growth:-
➢ Weight: The preschooler gains approximately 1.8kg/year.
➢ Height: He doubles birth length by 4–5 years of age . 
PHYSICAL DEVELOPMENT

The logic gates (AND, OR, NAND, NOR, INVERT) used in combinational logic. we will deal with data storage circuitry that will latch on to (remember) a digital state (1 or 0).

SPLD: Simple Programmable Logic Devices: A programmable, digital logic IC containing several PAL or PLA structures with internal interconnections and memory registers.

دراسة الاجهزة الوظيفية لجسم الانسان وعلاقتها بالتدريب الرياضي

TODDLER STAGE
Toddler stage is between 1 to 3 years of age. During this period, growth slows considerably.
 It is a time of intense exploration of the
environment.
 children attempt to find out how things work; what the word ―no‖ means; and the power of
temper tantrums, negativism, and obstinacy .