Souvenir Sheet: Computer System (Yemen, Arab Republic 1977)
Computer System (Yemen, Arab Republic 1977)
01 January (Yemen, Arab Republic ) within release 3rd Anniversary of the Reform Movement goes into circulation Souvenir Sheet Computer System face value 75 Yemeni fils
| Souvenir Sheet Computer System in catalogues | |
|---|---|
| Michel: | Mi: YE-AR BL190 |
| Stamp Number: | Sn: YE-AR 343a |
| Yvert et Tellier: | Yt: YE-AR BF44A |
Souvenir Sheet is vertical format.
Also in the issue 3rd Anniversary of the Reform Movement:
- Souvenir Sheet - Computer System face value 75;
- Stamp - 3rd Anniversary of the Reform Movement face value 25;
- Stamp - Computer System face value 75;
Souvenir Sheet Computer System it reflects the thematic directions:
A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation). Modern digital electronic computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. The term computer system may refer to a nominally complete computer that includes the hardware, operating system, software, and peripheral equipment needed and used for full operation; or to a group of computers that are linked and function together, such as a computer network or computer cluster.
