Early computing devices are materials used in the early ages for counting or arithmetic purposes.

1. Thursday, October 13, 2016

2. 
At the end of the lesson, I should be able to:
(a) Define early computing devices
(b) List and explain early computing devices
Learning Outcomes

3. 
Early computing devices are materials used in the early ages for
counting or arithmetic purposes.
Early compuiting devices include:
1) Fingers and toes: ten fingers and ten toes were used to keep
account of days, weeks, trade, children etc.
2) Pebbles: are small round stones that were used for counting
3) Grains – gotten from corn, beans, rice etc., were also used for
counting
4) Cowries: these are brightly coloured molluscs with a central
toothed opening. They were used as money and as counting aid.
5) Sticks: these include canes, clubs and shaped wood used for
measuring land an areas.
6) Writing on the wall: in early ages man learnt to use objects like
charcoal, mud, limestone & chalk to write strokes (tally) or draw
on the wall for counting and record keeping.

4. 
1. Read up the topic: mechanical counting devices
2. List four mechanical devices
3. Write problems associated with early counting
devices
Assignment

5. 
1) Fingers and toes:
2) Pebbles:
3) Grains
4) Cowries
5) Sticks
6) Tally
Word List

6. 
1. They can be used to count large numbers
2. It time wasting
3. It takes a lot of space
4. One may have limited materials
Problems with early counting devices