sharp el-509a

this appears to be a newer build of the classic sharp scientific style of the old el-512 and el-545 era, but slightly less well made and with rubber keys. its also slightly smaller in size which makes it quite a neat wallet style unit to carry around in a pocket.

later the range changed style into the, more plastic, el-509d (el-531). i much prefer this original brushed metal look.

the display has the same segment design which is bold and slightly slanted. this looks good, although it would have been nice to have 10 digits here rather than 8.