____________ refer to renewing or changing components like increasing the main memory, or hard disk capacities, or adding speakers, or modems, etc

Software Development
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____________ refer to renewing or changing components like increasing the main memory, or hard disk capacities, or adding speakers, or modems, etc.

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Upgrades

Upgrades are installed to renew or implement a new feature. Except for upgrades, hardware is normally one-time expense.