The block usually uses metastable hardened flops offering single or double latency delays at the output.

"This block used to have everything," Mr. Vella recalled the other day.

Conversely, larger blocks use disk space less efficiently, but the trade-off is greater read/write speeds.

The blocks used to be separate schools.

The block used to air in morning and afternoon mostly educational, drama and game shows during that time.

"If this thing blows, it'll take the house and leave a crater where the whole block used to be."

For example, coloured blocks used as tools in an educational program are excluded.

The block between Weversstreek and Stevenshoek used to be full of one room workers cottages.

HDB industrial and commercial blocks also use this system.

A dealer could stock one or two blocks to use for warranty replacement.