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COMPUTER APPLICATION
CONTENT- Use of Punch Cards to Store Information
- Writing Familiar Words in Coded Form
Use of Punch Cards to Store Information
The punch card is a practical application of binary numbers in the development of Information Technology. It is made up of hard paper. The punch cards were used at the onset of Computer Development to store information in form of data bits in columns. The mode of storage used a perforated hole to represent 0 and a cut out slot to represent 1. Examples include:
Figure 1 shows the storage of information about a man named Mr. Clifford who is 30 years old.
Figure 2 shows a punch tape which is an improvement on the punch cards as it can store a greater amount of information. It has 8 columns with each column having 0s (holes) and 1s (cut-outs). The first three columns are used for specific instructions while the last 5 are used for general instructions.
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ClassHall Instructor
Ezimeruwe Oghenekaro
Halima Ahmadu
Sadiq Barau