Page 35 - DMGT525_MATERIALS_MANAGEMENT

Materials Management

Notes (g) Capacity of a System: When calculating the capacity of a given code for covering all
situations while still maintaining code uniqueness, the following formula applies:
C=S P

where C is total available code combinations possible, S is the number of unique characters
in the set, and p is the number of code positions.

Example: A 3-digit code with numbers 0 to 9 will have 10 =1,000 unique code
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combinations. The size of code structure, therefore, should be decided before hand by anticipating
the requirements of the unique combinations.

Self Assessment

Fill in the blanks:
4. The codification system should avoid …………… and unwieldy description.

5. The coding system should be …………… fit for the needs of the users and the methods of
data processing employed.
6. The code design should be flexible to accommodate …………………… without disturbing
existing codes.
7. Characters with ………………. appearances should be eliminated.
8. In calculating the capacity of a given code for covering all situations while still maintaining
code uniqueness, the formula used is …………………………. .

3.3 Types of Coding

The following are the three important methods of codification:
1. Numerical Method

2. Alphabetical Method
3. Numerical Cum Alphabetical Method
1. Numerical Method: Under this method, each number or numerical digit is allotted to each
item or material.
For example, in printing press following codes may be assigned:
Paper 145
Ink 155

Gum 165
There are various universal decimal classification of codification used in libraries may be
indicated for identification of items.

This method is used where materials accounting is to be mechanized by use of punched
cards or computers.

!

Caution Each code should uniquely indicate one item.

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