INTEL 487SX
\ˈɪntɛl fˈɔːhˈʌndɹədən ˈe͡ɪtisˈɛvən ˌɛsˈɛks], \ˈɪntɛl fˈɔːhˈʌndɹədən ˈeɪtisˈɛvən ˌɛsˈɛks], \ˈɪ_n_t_ɛ_l f_ˈɔː_h_ˈʌ_n_d_ɹ_ə_d_ə_n ˈeɪ_t_i_s_ˈɛ_v_ə_n ˌɛ_s_ˈɛ_k_s]\
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A version of the Intel 486DX microprocessorwith an extra pin, for use in the coprocessor socket of anIntel 486SX system. The 487SX provides the FPU which ismissing in the 486SX.Although the 486SX is completely disabled when you install a487SX, the 487SX design requires that you leave the 486SX inyour PC [why?], rather than use it elsewhere. Intel admitsthat in some systems you can unplug the 486SX and fit a 487SXin its place but they don't guarantee that it will alwayswork.See Intel 486.
By Denis Howe
Word of the day
Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.