What is CompactFlash card (CF card)?

This definition explains the meaning of CompactFlash card (CF card), how it saves data to a mass storage device and future technology trends.
A CompactFlash card (CF card) is a memory card format developed by SanDisk in 1994 that uses flash memory technology to store data on a very small portable device.

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Which Memory card is better, a compact flash or an SD card? — Kevin Pepper Photography

128MB CF (Compact Flash) Card SDCFB-128 or SDCFJ-128 (CAV) Compact Flash Memory Card

SanDisk Extreme 64 GB UDMA7 Compact Flash Card - Black/Gold, 64 GB

High Speed CF Memory Card Compact Flash CF Card for Digital Camera (8GB)

SanDisk 128GB Extreme Pro CompactFlash Memory SDCFXPS-128G-A46

What is a CompactFlash Memory Card with Pros and Cons

CF Card 4GB Transcend CompactFlash Card 20MB/s 133x

Transcend CF220I CompactFlash Industrial 2 GB SLC Compact Flash Card

Everything You Need to Know: CF Cards

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Best Buy: SanDisk Ultra 4GB CompactFlash (CF) Memory Card SDCFH-004G-A46