Cheques generally contain:

1. place of issue
2. cheque number
3. date of issue
4. payee
5. amount of currency
6. signature of the drawer
7. routing / account number in MICR format - in the U.S., the routing number is a nine-digit number in which the first 4 digits identifies the U.S. Federal Reserve Bank's cheque-processing center. This is followed by digits 5 through 8, identifying the specific bank served by that cheque-processing center. Digit 9 is a verification digit, computed using a complex algorithm of the previous 8 digits. The account number is assigned independently by the various banks.
8. fractional routing number (U.S. only) - also known as the transit number, consists of a denominator mirroring the first 4 digits of the routing number. And a hyphenated numerator, also known as the ABA number, in which the first part is a city code (1-49), if the account is in one of 49 specific cities, or a state code (50-99) if it is not in one of those specific cities; the second part of the hyphenated numerator mirrors the 5th through 8th digits of the routing number with leading zeros removed.

A cheque is generally valid indefinitely or for six months after the date of issue unless otherwise indicated; this varies depending on where the cheque is drawn[citation needed]. In Australia, for example, it is fifteen months. Legal amount (amount in words) is also highly recommended but not strictly required.

In the USA and some other countries, cheques contain a memo line where the purpose of the cheque can be indicated as a convenience without affecting the official parts of the cheque. This is not used in Britain where such notes are often written on the reverse side.

Source: Cheque - Wikipedia, the free encyclopedia