Essential Numbers

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Everything you always wanted to know about time
24 x 7 x 365 24 hours, 7 days a week, 365 days a year
24 Hours in a day
365 Days in a year
1440 Minutes per day
3600 Seconds per hour
8760 Hours per year
86400 Seconds per day
525600 Minutes per year
31536000 Seconds per year

Bits & Bytes
1 Byte 8 bits
1 KB 1024 Byte (RAM)
1 Kbs 1000 bits per second (network)
1 MB 1048576 Bytes (RAM)
1 Mbs 1000000 bits per second (network)
56 Kbs 56000 bits per second or 7000 Bytes per second (network)

Communication Speeds
100BaseT 100 Mbs
10BaseT 10 Mbs
ATM 622 Mbs
ATM/03 155 Mbs
Fiber 1062 Mbs
Gigabit 1 Gbs
IBM/TP 25 Mbs
Mobile Phone 9.6 Kbs (for now, higher speeds are planned)
T1 1.544 Mbs
T3 45 Mbs
Token/Ring 16 Mbs
V90 Modem 56 Kbs

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