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 . 

Magnitude comparison is performed by a logic circuit called a comparator, covered in A comparator compares two quantities and indicates whether or not they are equal. For example, suppose you have two numbers and wish to know if they are equal or not equal and, if not equal,

الإحصاء : هو عملية جمع البيانات وتصنيفها في صورة

NEWBORN STAGE
Newborn stage is the first 4 weeks or first month of life. It is a transitional period from intrauterine life to extra uterine environment. 
NORMAL NEWBORN
Physical Growth
- Weight = 2.700 – 4 kg
- Wt loss 5% -10% by 3-4 days after birth
- Wt gain by 10th days of life